Flatten the dist and various 4.n.n trees in preparation of future ntp imports.

75 files changed, 7628 insertions, 0 deletions

diff --git a/scripts/Makefile.am b/scripts/Makefile.am
new file mode 100644
index 0000000..dc41963
--- /dev/null
+++ b/scripts/Makefile.am
@@ -0,0 +1,4 @@
+bin_SCRIPTS = ntp-wait ntptrace
+noinst_SCRIPTS = calc_tickadj checktime freq_adj mkver ntpsweep ntpver plot_summary summary
+EXTRA_DIST = fixautomakedepsmagic hpadjtime.sh monitoring ntp-close \
+	ntp-groper ntp-restart ntp-status rc1 rc2 stats support
diff --git a/scripts/Makefile.in b/scripts/Makefile.in
new file mode 100644
index 0000000..ff2c46b
--- /dev/null
+++ b/scripts/Makefile.in
@@ -0,0 +1,345 @@
+# Makefile.in generated by automake 1.7.7 from Makefile.am.
+# @configure_input@
+
+# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+# Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+top_builddir = ..
+
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
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+install_sh_DATA = $(install_sh) -c -m 644
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+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
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+MAKE_LIBNTPSIM = @MAKE_LIBNTPSIM@
+MAKE_LIBPARSE = @MAKE_LIBPARSE@
+MAKE_LIBPARSE_KERNEL = @MAKE_LIBPARSE_KERNEL@
+MAKE_NTPDSIM = @MAKE_NTPDSIM@
+MAKE_NTPTIME = @MAKE_NTPTIME@
+MAKE_NTP_KEYGEN = @MAKE_NTP_KEYGEN@
+MAKE_PARSEKMODULE = @MAKE_PARSEKMODULE@
+MAKE_SNTP = @MAKE_SNTP@
+MAKE_TICKADJ = @MAKE_TICKADJ@
+MAKE_TIMETRIM = @MAKE_TIMETRIM@
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+datadir = @datadir@
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+target_cpu = @target_cpu@
+target_os = @target_os@
+target_vendor = @target_vendor@
+bin_SCRIPTS = ntp-wait ntptrace
+noinst_SCRIPTS = calc_tickadj checktime freq_adj mkver ntpsweep ntpver plot_summary summary
+EXTRA_DIST = fixautomakedepsmagic hpadjtime.sh monitoring ntp-close \
+	ntp-groper ntp-restart ntp-status rc1 rc2 stats support
+
+subdir = scripts
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
+CONFIG_HEADER = $(top_builddir)/config.h
+CONFIG_CLEAN_FILES = calc_tickadj checktime freq_adj mkver ntp-wait \
+	ntpsweep ntptrace ntpver plot_summary summary
+SCRIPTS = $(bin_SCRIPTS) $(noinst_SCRIPTS)
+
+DIST_SOURCES =
+DIST_COMMON = README $(srcdir)/Makefile.in Makefile.am calc_tickadj.in \
+	checktime.in freq_adj.in mkver.in ntp-wait.in ntpsweep.in \
+	ntptrace.in ntpver.in plot_summary.in summary.in
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in:  Makefile.am  $(top_srcdir)/configure.in $(ACLOCAL_M4)
+	cd $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu  scripts/Makefile
+Makefile:  $(srcdir)/Makefile.in  $(top_builddir)/config.status
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)
+calc_tickadj: $(top_builddir)/config.status calc_tickadj.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+checktime: $(top_builddir)/config.status checktime.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+freq_adj: $(top_builddir)/config.status freq_adj.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+mkver: $(top_builddir)/config.status mkver.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+ntp-wait: $(top_builddir)/config.status ntp-wait.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+ntpsweep: $(top_builddir)/config.status ntpsweep.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+ntptrace: $(top_builddir)/config.status ntptrace.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+ntpver: $(top_builddir)/config.status ntpver.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+plot_summary: $(top_builddir)/config.status plot_summary.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+summary: $(top_builddir)/config.status summary.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+binSCRIPT_INSTALL = $(INSTALL_SCRIPT)
+install-binSCRIPTS: $(bin_SCRIPTS)
+	@$(NORMAL_INSTALL)
+	$(mkinstalldirs) $(DESTDIR)$(bindir)
+	@list='$(bin_SCRIPTS)'; for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f $$d$$p; then \
+	    f=`echo "$$p" | sed 's|^.*/||;$(transform)'`; \
+	    echo " $(binSCRIPT_INSTALL) $$d$$p $(DESTDIR)$(bindir)/$$f"; \
+	    $(binSCRIPT_INSTALL) $$d$$p $(DESTDIR)$(bindir)/$$f; \
+	  else :; fi; \
+	done
+
+uninstall-binSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(bin_SCRIPTS)'; for p in $$list; do \
+	  f=`echo "$$p" | sed 's|^.*/||;$(transform)'`; \
+	  echo " rm -f $(DESTDIR)$(bindir)/$$f"; \
+	  rm -f $(DESTDIR)$(bindir)/$$f; \
+	done
+uninstall-info-am:
+tags: TAGS
+TAGS:
+
+ctags: CTAGS
+CTAGS:
+
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+
+top_distdir = ..
+distdir = $(top_distdir)/$(PACKAGE)-$(VERSION)
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's|.|.|g'`; \
+	list='$(DISTFILES)'; for file in $$list; do \
+	  case $$file in \
+	    $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
+	    $(top_srcdir)/*) file=`echo "$$file" | sed "s|^$$topsrcdirstrip/|$(top_builddir)/|"`;; \
+	  esac; \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
+	  if test "$$dir" != "$$file" && test "$$dir" != "."; then \
+	    dir="/$$dir"; \
+	    $(mkinstalldirs) "$(distdir)$$dir"; \
+	  else \
+	    dir=''; \
+	  fi; \
+	  if test -d $$d/$$file; then \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
+	    fi; \
+	    cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
+	  else \
+	    test -f $(distdir)/$$file \
+	    || cp -p $$d/$$file $(distdir)/$$file \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(SCRIPTS)
+
+installdirs:
+	$(mkinstalldirs) $(DESTDIR)$(bindir)
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-rm -f $(CONFIG_CLEAN_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+
+distclean-am: clean-am distclean-generic
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+dvi: dvi-am
+
+dvi-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-exec-am: install-binSCRIPTS
+
+install-info: install-info-am
+
+install-man:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-binSCRIPTS uninstall-info-am
+
+.PHONY: all all-am check check-am clean clean-generic distclean \
+	distclean-generic distdir dvi dvi-am info info-am install \
+	install-am install-binSCRIPTS install-data install-data-am \
+	install-exec install-exec-am install-info install-info-am \
+	install-man install-strip installcheck installcheck-am \
+	installdirs maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-generic pdf pdf-am ps ps-am uninstall \
+	uninstall-am uninstall-binSCRIPTS uninstall-info-am
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/scripts/README b/scripts/README
new file mode 100644
index 0000000..673ddb4
--- /dev/null
+++ b/scripts/README
@@ -0,0 +1,43 @@
+README file for directory ./scripts of the NTP Version 4 distribution
+
+This directory contains shell and perl script files for the configuration,
+monitoring and support of NTP installations. See the README and RELNOTES
+files in the parent directory for directions on how to use these files.
+
+calc_tickadj	Calculates "optimal" value for tick given ntp.drift file
+
+freq_adj	Calculates and optionally sets the clock frequency
+		based on ntp.drift .  For FreeBSD systems.
+
+mkver.in	script to create new version numbers for all sources
+
+monitoring      directory containing perl scripts useful for monitoring
+                operations
+
+rc1		start/stop scripts for NTP
+
+rc2		start/stop script for NTP
+
+ntp-close	find public stratum 2 servers that don't respond
+
+ntp-groper	script useful for reaching out and rattling the cages of
+		NTP peers to see if animals are inside the bars
+
+ntp-restart	script useful for killing and restarting the NTP daemon
+
+ntp-wait	Blocks until ntpd is in state 4 (synchronized).
+		Hopefully useful at boot time, to delay the boot sequence
+		until after "ntpd -g" has set the time.
+
+ntpsweep	prints per host given in <file> the NTP stratum level, the
+		clock offset in seconds, the daemon version, the operating
+		system and the processor.
+
+ntpver		What version of the NTP daemon is running?
+
+stats		directory containing awk and shell scripts useful for
+		maintaining statistics summaries of clockstats, loopstats
+		and peerstats files
+
+support         directory containing shell and perl scripts useful for
+                configuration and monitoring of NTP subnets
diff --git a/scripts/calc_tickadj.in b/scripts/calc_tickadj.in
new file mode 100644
index 0000000..32eae12
--- /dev/null
+++ b/scripts/calc_tickadj.in
@@ -0,0 +1,38 @@
+#! @PATH_PERL@
+#
+# drift of 104.8576 -> +1 tick.  Base  of 10000 ticks.
+#
+# 970306 HMS Deal with nanoseconds.  Fix sign of adjustments.
+
+$df="/etc/ntp.drift";
+# Assumes a 100Hz box with "tick" of 10000
+# Someday, we might call "tickadj" for better values...
+$base=10000;	# tick: 1,000,000 / HZ
+$cvt=104.8576;	# 2 ** 20 / $base
+$v1=0.;
+$v2="";
+
+if (open(DF, $df))
+  {
+    if ($_=<DF>)
+      {
+        ($v1, $v2) = split;
+      }
+
+    while ($v1 < 0)
+      {
+        $v1 += $cvt;
+        $base--;
+      }
+
+    while ($v1 > $cvt)
+      {
+        $v1 -= $cvt;
+        $base++;
+      }
+  }
+
+printf("%.3f (drift)\n", $v1);
+
+printf("%d usec; %d nsec\n", $base, ($base + ($v1/$cvt)) * 1000);
+
diff --git a/scripts/checktime.in b/scripts/checktime.in
new file mode 100644
index 0000000..2fe8f71
--- /dev/null
+++ b/scripts/checktime.in
@@ -0,0 +1,79 @@
+#! @PATH_PERL@
+#! @PATH_PERL@ -d
+# 
+# This script compares the time of several machines with the
+# time on the local host.
+#
+# Use or modify it as you wish. 
+#
+# As the original author is only expecting 14 minutes of fame, 
+# leaving his name attached would be appreciated.
+#
+# R. Gary Cutbill <rgary@chrysalis.com>
+# 21 April 1999
+#
+$tol=2.0;
+$|=1;
+print "Time Check";
+
+open(HOSTS,"ypcat hosts.byaddr |");  # get a list of hosts from the yp server.
+
+while ($line=<HOSTS>) { # loop for each host getting the offset compared to localhost
+	($addr,$host,$aliases)=split(/\s+/,$line,3);
+        $res=`/usr/local/bin/ntptrace -m 1 -r 1 -t 1 $host`;
+	print ".";
+	chop $res;
+        push (@results,$res);
+}
+print "\n";
+
+
+#
+# Sort the list of hosts, and print out there offsets
+# from the local host.  
+#
+@list=sort appropriately @results;
+foreach $i ( @list ) {
+
+   @dargs=split(/\s+/,$i);
+   if ( $dargs[1] eq "\*Timeout\*" ) { 
+     print "$i\n";
+     chop $dargs[0];
+     push(@down,$dargs[0]);
+   } else {
+     printf "%-25s %7s %3s %6s %10s %5s %8s %8s\n",@dargs;
+     if ( ( $dargs[4] > $tol ) || ( $dargs[4] < -$tol ) ) { 
+	 chop $dargs[0];
+         push(@toofarout,$dargs[0]); }
+   }
+}
+#
+# When the above list finishes, hosts that are different by +/- $tol (two seconds)
+# are in @toofarout.  Hosts that are down are in @down. They are treated the same
+# way here, but you might want to do something different depending on your site.
+#
+# print a set of suggested rsh commands to run on the hosts that 
+# don't have "good" time.   "restartntp" is left as an excersize to the reader.
+# I usually use it to kill a running xntpd, ntpdate some server, and the start xntp
+# again.
+# 
+print "\nConsider:\n";
+foreach $i ( (@down,@toofarout) ) {
+    print "  rsh $i sudo restartntp\n";
+}
+
+
+#
+# sort the results from the list.  First by stratum, then by time deviation
+# Put hosts that didn't respond (timed out) on the bottom.
+#
+sub appropriately {
+    @af=split(/\s+/,$a);
+    @bf=split(/\s+/,$b);
+    $aba= ($af[4]<0)?-$af[4]:$af[4];
+    $abb= ($bf[4]<0)?-$bf[4]:$bf[4];
+
+        ( $af[1] ne $bf[1] ) ? $bf[1] cmp $af[1] :
+	   ( ( $af[2] != $bf[2] ) ? ( $bf[2] <=> $af[2] ) :
+	     ( ( $aba != $abb )  ? ( $abb <=> $aba ) : ($af[0] cmp $bf[0] ) ) );
+}
diff --git a/scripts/fixautomakedepsmagic b/scripts/fixautomakedepsmagic
new file mode 100644
index 0000000..ec82bba
--- /dev/null
+++ b/scripts/fixautomakedepsmagic
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+prog=`basename $0`
+
+
+t=/tmp/$prog.$$
+
+trap 'rm -f ${t} ; exit 1' 1 3 15
+
+while [ $# -gt 0 ]; do
+        f=$1
+	shift
+	sed -e '/^DEPS_MAGIC :=/,/^-include \$/s/^/#/' $f > $t
+	c="diff $f $t"
+	echo $c
+	$c
+	tstatus=$?
+	if [ $tstatus = 0 ]; then
+		echo "$prog":" $f not modified"
+	elif [ ! -w $f ]; then
+		echo "$prog":" $f not not writable"
+	else
+		c="cp $t $f"
+		echo $c
+		$c
+	fi
+	rm -f $t
+done
diff --git a/scripts/freq_adj.in b/scripts/freq_adj.in
new file mode 100644
index 0000000..88eb390
--- /dev/null
+++ b/scripts/freq_adj.in
@@ -0,0 +1,97 @@
+#! @PATH_PERL@ -w
+
+die "perl5 needed\n" unless ($] > 5);
+
+use Getopt::Std;
+use vars qw($opt_n);
+
+getopts('d:nt:');
+
+#chop($ncpu = `sysctl -n hw.ncpu`);
+#die "Found $ncpu CPUs; can only be run on systems with 1 CPU.\n" if ($ncpu > 1);
+
+$driftfile = "/etc/ntp.drift";
+$driftfile = $opt_d if defined($opt_d);
+
+chop($timer = `sysctl -n kern.timecounter.hardware 2> /dev/null`);
+
+$timer =~ tr/\U/\L/;
+
+if ($timer eq '') {
+  open(DM, "/var/run/dmesg.boot");
+  while(<DM>) {
+    # Timecounter "i8254"  frequency 1193182 Hz
+    if (/^Timecounter "(\w+)"\s+/) {
+      $timer = $1;
+      last;
+    }
+  }
+  close(DM);
+}
+
+$opt_t = $timer if !defined($opt_t);
+
+if ($timer ne '') {		# $timer found...
+  if ($opt_t ne  '') {		# - and $opt_t found
+    if ($timer ne $opt_t) {	# - - and they differ
+      warn "You specified a $opt_t timer but I detected a $timer timer.\n";
+      usage();
+      exit 1;
+    } else {			# - - and they are the same
+      ;
+    }
+  } else {			# - but no $opt_t specified; this is OK
+    ;
+  }
+} else {			# No $timer found...
+  if ($opt_t ne '') {		# - but $opt_t was specified
+    $timer = $opt_t;		# - - so use it.
+  } else {			# - and neither was $opt_t
+    warn "I can't tell what timer you have.  Please specify one.\n";
+    usage();
+    exit 1;
+  }
+}
+
+open(DF, $driftfile) || die "Can't open driftfile ($driftfile): $!\n";
+while(<DF>) {
+    chop;
+    if (/^(-?\d+\.\d+)(\s\d)?$/) {
+	$drift = $1;
+    } else {
+	die "Bogus value in driftfile $driftfile: <$_>\n";
+    }
+}
+close(DF);
+
+print "NTP drift is <$drift>\n";
+
+# Convert from NTP's idea of PPM to a decimal equivalent
+$freq_adj = int ( $drift * ( 10 ** 6 / 2 ** 20) );
+print "normalized freq_adj  is <$freq_adj>\n";
+
+$freq_adj = int ( ( $freq_adj - 1 ) / 2 );
+print "Applying freq_adj of <".-$freq_adj.">\n";
+
+$sysctl = "machdep.".$timer."_freq";
+
+chop($mach_freq = `sysctl -n $sysctl`);
+
+print "$sysctl is <$mach_freq>\n";
+
+$n_mach_freq = $mach_freq - $freq_adj;
+
+if (defined($opt_n)) {
+  print "$sysctl $mach_freq -> $n_mach_freq\n";
+} else {
+  print "i8254: ".`sysctl -w $sysctl=$n_mach_freq`;
+}
+
+sub usage {
+  print STDERR <<EOUsage
+Usage: $0 [-d drift_file] [-n] [-t timer]
+where "drift_file" defaults to /etc/ntp.drift
+and "timer" is usually "tsc" or "i8254"
+and "-n" says "don't really change anything, just say what would happen".
+EOUsage
+}
diff --git a/scripts/hpadjtime.sh b/scripts/hpadjtime.sh
new file mode 100755
index 0000000..3de2a40
--- /dev/null
+++ b/scripts/hpadjtime.sh
@@ -0,0 +1,18 @@
+#! /bin/sh
+val=1
+if [ -f /bin/uname -o -f /usr/bin/uname ]; then
+	set `uname -a | tr '[A-Z]' '[a-z]'`
+	case "$1" in
+		hp-ux)  case "$3" in
+			*.10.*) val=1 ;;
+			*.09.03 | *.09.10) case "$5" in
+				9000/3*) val=1 ;;
+				*)       val=0 ;;
+				esac ;;
+			*) val=0 ;;
+			esac
+			;;
+	*)
+	esac
+fi
+exit $val
diff --git a/scripts/mkver.in b/scripts/mkver.in
new file mode 100644
index 0000000..dbe9c2a
--- /dev/null
+++ b/scripts/mkver.in
@@ -0,0 +1,43 @@
+#!@PATH_SH@
+PROG=${1-UNKNOWN}
+
+ConfStr="$PROG"
+
+ConfStr="$ConfStr @VERSION@"
+
+case "$CSET" in
+ '') ;;
+ *) ConfStr="$ConfStr@$CSET" ;;
+esac
+
+case "@LIBRSAREF@" in
+ '')
+    case "@AUTOKEY@" in
+     '') ;;
+     *) ConfStr="${ConfStr}-a" ;;
+    esac
+    ;;
+ *)  ConfStr="${ConfStr}-r" ;;
+esac
+
+ConfStr="$ConfStr `LC_TIME=C date`"
+
+if [ ! -f .version ]; then
+  echo 0 > .version
+fi
+RUN="`cat .version`"
+RUN="`expr $RUN + 1`"
+echo $RUN > .version
+
+ConfStr="$ConfStr (${RUN})"
+
+echo "Version <${ConfStr}>";
+
+rm -f version.c
+cat > version.c << -EoF-
+/*
+ * version file for $PROG
+ */
+#include <config.h>
+const char * Version = "${ConfStr}";
+-EoF-
diff --git a/scripts/monitoring/README b/scripts/monitoring/README
new file mode 100644
index 0000000..f8eb0a9
--- /dev/null
+++ b/scripts/monitoring/README
@@ -0,0 +1,158 @@
+This directory contains support for monitoring the local clock of xntp daemons.
+
+WARNING: The scripts and routines contained in this directory are beta
+	 release!  Do not depend on their correct operation. They are,
+	 however, in regular use at University of Erlangen-Nuernberg.
+	 No severe problems are known for this code.
+
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+PLEASE THINK TWICE BEFORE STARTING MONITORING REMOTE XNTP DEAMONS !!!!
+MONITORING MAY INCREASE THE LOAD OF THE DEAMON MONITORED AND MAY
+INCREASE THE NETWORK LOAD SIGNIFICANTLY
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+
+Files are:
+
+README:
+	This file
+
+ntptrap:
+	perl script to log ntp mode 6 trap messages.
+
+	It sends a set_trap request to each server given and dumps the
+	trap messages received. It handles refresh of set_trap.
+	Currently it handles only NTP V2, however the NTP V3 servers
+	also accept v2 requests. It will not interpret v3 system and
+	peer stati correctly.
+
+	usage:
+	  ntptrap [-n] [-p <port>] [-l <debug-output>] servers...
+	
+	-n:		do not send set_trap requests
+
+	port:		port to listen for responses
+			useful if you have a configured trap
+
+	debug-output:	file to write trace output to (for debugging)
+
+	This script convinced me that ntp trap messages are only of
+	little use.
+
+ntploopstat:
+	perl script to gather loop info statistics from xntpd via mode 7
+	LOOP_INFO requests.
+
+	This script collects data to allow monitoring of remote xntp servers
+	where it is not possible to directly access the loopstats file
+	produced by xntpd itself. Of course, it can be used to sample
+	a local server if it is not configured to produce a loopstats file.
+
+	Please note, this program poses a high load on the server as
+	a communication takes place every delay seconds ! USE WITH CARE !
+
+	usage:
+	  ntploopstat [-d<delay>] [-t<timeout>] [-l <logfile>] [-v] [ntpserver]
+	
+	delay:		number of seconds to wait between samples
+			default: 60 seconds
+	timeout:	number of seconds to wait for reply
+			default 12 seconds
+	logfile:	file to log samples to
+			default: loopstats:<ntpserver>:
+			(note the trailing colon)
+			This name actually is a prefix.
+			The file name is dynamically derived by appending
+			the name of the month the sample belongs to.
+			Thus all samples of a month end up in the same file.
+
+	the format of the files generated is identical to the format used by
+	xntpd with the loopstats file:
+		MJD <seconds since midnight UTC> offset frequency compliance
+	
+	if a timeout occurs the next sample is tried after delay/2 seconds
+
+	The script will terminate after MAX_FAIL (currently 60)
+	consecutive errors.
+
+	Errors are counted for:
+		- error on send call
+		- error on select call
+		- error on recv call
+		- short packet received
+		- bad packet 
+		- error on open for logfile
+
+ntploopwatch:
+	perl script to display loop filter statistics collected by ntploopstat
+	or dumped directly by xntpd.
+
+	Gnuplot is used to produce a graphical representation of the sample
+	values, that have been preprocessed and analysed by this script.
+
+	It can either be called to produce a printout of specific data set or
+	used to continously monitor the values. Monitoring is achieved by 
+	periodically reprocessing the logfiles, which are updated regularly
+	either by a running ntploopstat process or by the running xntpd.
+
+	usage:
+	  to watch statistics permanently:
+	     ntploopwatch [-v[<level>]] [-c <config-file>] [-d <working-dir>]
+
+	  to get a single print out specify also
+			  -P<printer> [-s<samples>]
+				      [-S <start-time>] [-E <end-time>]
+				      [-O <MaxOffs>] [-o <MinOffs>]
+	
+	level:		level of verbosity for debugging
+	config-file:	file to read configurable settings from
+			On each iteration it is checked and reread
+			if it has been changed
+			default: loopwatch.config
+	working-dir:	specify working directory for process, affects
+			interpretation of relative file names
+	
+	All other flags are only useful with printing plots, as otherwise
+	command line values would be replaced by settings from the config file.
+
+	printer:	specify printer to print plot
+			BSD print systems semantics apply; if printer
+			is omitted the name "ps" is used; plots are
+			prepared using PostScript, thus the printer
+			should best accept postscript input
+
+	For the following see also the comments in loopwatch.config.SAMPLE
+
+	samples:	use last # samples from input data
+	start-time:	ignore input samples before this date
+	end-time:	ignore input samples after this date
+			if both start-time and end-time are specified
+			a given samples value is ignored
+	MaxOffs:
+	MinOffs:	restrict value range 
+
+loopwatch.config.SAMPLE:
+	sample config file for ntploopwatch
+	each configurable option is explained there
+
+lr.pl:
+	linear regression package used by ntploopwatch to compute
+	linear approximations for frequency and offset values
+	within display range
+
+timelocal.pl:
+
+	used during conversion of ISO_DATE_TIME values specified in
+	loopwatch config files to unix epoch values (seconds since
+	1970-01-01_00:00_00 UTC)
+
+	A version of this file is distributed with perl-4.x, however,
+	it has a bug related to dates crossing 1970, causing endless loops..
+	The version contained here has been fixed.
+
+ntp.pl:
+	perl support for ntp v2 mode 6 message handling
+	WARNING: This code is beta level - it triggers a memory leak;
+		 as for now it is not quite clear, wether this is caused by a
+		 bug in perl or by bad usage of perl within this script.
+
diff --git a/scripts/monitoring/loopwatch.config.SAMPLE b/scripts/monitoring/loopwatch.config.SAMPLE
new file mode 100644
index 0000000..8cefea3
--- /dev/null
+++ b/scripts/monitoring/loopwatch.config.SAMPLE
@@ -0,0 +1,89 @@
+# sample configuration and control file for ntploowatch
+#
+# delay:	sampling interval in seconds
+delay=60
+# samples:	use only last # samples
+samples=600
+# DO NOT USE srcprefix in shared config files
+# srcprefix:	name of file to read samples from
+#  		current time suffix (month name) is appended
+#		defaults to "./var@$STATHOST/loopstats."
+#		The string "$STATHOST"is replaced by the name of the host
+#		being monitored
+#srcprefix=./var@$STATHOST/loopstats.
+#
+# showoffs:	yes/no control display of offset values
+showoffs=yes
+#
+# showfreq:	yes/no control display of frequency values
+showfreq=yes
+#
+# showcmpl:	yes/no control display of compliance values
+showcmpl=no
+#
+# showoreg:	yes/no control display of linear regression of offset values
+showoreg=no
+#
+# showfreg:	yes/no control display of linear regression of frequency values
+showfreg=no
+#
+# timebase:	dynamic/ISO_DATE_TIME point of zero for linear regression
+#		ISO_DATE_TIME:  yyyy-mm-dd_hh:mm:ss.ms
+#		values are interpreted using local time zone
+#		parts omitted from front default to current date/time
+#		parts omitted from end  default to lowest permitted values
+#		to get aa:bb being interpreted as minutes:seconds use aa:bb.0
+#		for dynamic '00:00:00.0 of current day' is used
+timebase=dynamic
+#
+# freqbase:	dynamic/<baseval> 
+#		if a number is given, subtract this from sampling values for display
+#		if dynamic is selected, freqbase is adjusted to fit into the range of
+#		offset values
+freqbase=dynamic
+#
+# cmplscale:	dynamic/<scaling>
+#		if a number is given, the sampling values are divided by this number
+#		if dynamic is selected, cmplscale is adjusted to fit into the range of
+#		offset values
+cmplscale=dynamic
+#
+# DumbScale:	0/1
+#		0 enables dynamic adjust of value ranges for freqbase and cmplscale
+#		  timescale is labeled with human readable times
+#		1 only uses explicit scaling for numbers
+#		  timescale is labeled with hours relative to timebase
+DumbScale=0
+#
+# StartTime:	none/ISO_DATE_TIME
+#		ignore any samples before the specified date
+StartTime=none
+#
+# EndTime:	none/ISO_DATE_TIME
+#		ignore any samples after the specified date
+#
+#		if both StartTime and EndTime are specified
+#		the value specified for samples is ignored
+EndTime=none
+#
+# MaxOffs:	none/<number>
+#		limit display (y-axis) to values not larger than <number>
+MaxOffset=none
+#
+# MinOffs:	none/<number>
+#		limit display (y-axis) to values not smaller than <number>
+MinOffset=none
+
+#
+# verbose:	<number>
+# 		specify level for debugging 
+#		default is 0 for printing and 1 for monitoring
+#		level 1 will just print a timestamp for any display update
+#		(this is every delay seconds)
+verbose=1
+#
+# deltaT:	<seconds>
+#		mark `holes' in the sample data grater than <seconds>
+#		by a break in the plot
+#		default: 512 seconds
+deltaT=512
diff --git a/scripts/monitoring/lr.pl b/scripts/monitoring/lr.pl
new file mode 100644
index 0000000..7980d22
--- /dev/null
+++ b/scripts/monitoring/lr.pl
@@ -0,0 +1,151 @@
+;#
+;# lr.pl,v 3.1 1993/07/06 01:09:08 jbj Exp
+;#
+;#
+;# Linear Regression Package for perl
+;# to be 'required' from perl
+;#
+;#  Copyright (c) 1992 
+;#  Frank Kardel, Rainer Pruy
+;#  Friedrich-Alexander Universitaet Erlangen-Nuernberg
+;#
+;#  Copyright (c) 1997 by
+;#  Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de>
+;#  (Converted to a PERL 5.004 package)
+;#
+;#############################################################
+
+package lr;
+
+##
+## y = A + Bx
+##
+## B = (n * Sum(xy) - Sum(x) * Sum(y)) / (n * Sum(x^2) - Sum(x)^2)
+##
+## A = (Sum(y) - B * Sum(x)) / n
+##
+
+##
+## interface
+##
+;# init(tag);		initialize data set for tag
+;# sample(x, y, tag);	enter sample
+;# Y(x, tag);		compute y for given x 
+;# X(y, tag);		compute x for given y
+;# r(tag);		regression coefficient
+;# cov(tag);		covariance
+;# A(tag);   
+;# B(tag);
+;# sigma(tag);		standard deviation
+;# mean(tag);
+#########################
+
+sub init
+{
+    my $self = shift;
+
+    $self->{n}   = 0;
+    $self->{sx}  = 0.0;
+    $self->{sx2} = 0.0;
+    $self->{sxy} = 0.0;
+    $self->{sy}  = 0.0;
+    $self->{sy2} = 0.0;
+}
+
+sub sample($$$)
+{
+    my $self = shift;
+    my($_x, $_y) = @_;
+
+    ++($self->{n});
+    $self->{sx}  += $_x;
+    $self->{sy}  += $_y;
+    $self->{sxy} += $_x * $_y;
+    $self->{sx2} += $_x**2;
+    $self->{sy2} += $_y**2;
+}
+
+sub B($)
+{
+    my $self = shift;
+
+    return 1 unless ($self->{n} * $self->{sx2} - $self->{sx}**2);
+    return ($self->{n} * $self->{sxy} - $self->{sx} * $self->{sy})
+	/ ($self->{n} * $self->{sx2} - $self->{sx}**2);
+}
+
+sub A($)
+{
+    my $self = shift;
+
+    return ($self->{sy} - B($self) * $self->{sx}) / $self->{n};
+}
+
+sub Y($$)
+{
+    my $self = shift;
+
+    return A($self) + B($self) * $_[$[];
+}
+
+sub X($$)
+{
+    my $self = shift;
+
+    return ($_[$[] - A($self)) / B($self);
+}
+
+sub r($)
+{
+    my $self = shift;
+
+    my $s = ($self->{n} * $self->{sx2} - $self->{sx}**2)
+	  * ($self->{n} * $self->{sy2} - $self->{sy}**2);
+
+    return 1 unless $s;
+    
+    return ($self->{n} * $self->{sxy} - $self->{sx} * $self->{sy}) / sqrt($s);
+}
+
+sub cov($)
+{
+    my $self = shift;
+
+    return ($self->{sxy} - $self->{sx} * $self->{sy} / $self->{n})
+	/ ($self->{n} - 1);
+}
+
+sub sigma($)
+{
+    my $self = shift;
+
+    return 0 if $self->{n} <= 1;
+    return sqrt(($self->{sy2} - ($self->{sy} * $self->{sy}) / $self->{n})
+		/ ($self->{n}));
+}
+
+sub mean($)
+{
+    my $self = shift;
+
+    return 0 if $self->{n} <= 0;
+    return $self->{sy} / $self->{n};
+}
+
+sub new
+{
+    my $class = shift;
+    my $self = {
+	(n => undef,
+	 sx => undef,
+	 sx2 => undef,
+	 sxy => undef,
+	 sy => undef,
+	 sy2 => undef)
+    };
+    bless $self, $class;
+    init($self);
+    return $self;
+}
+
+1;
diff --git a/scripts/monitoring/ntp.pl b/scripts/monitoring/ntp.pl
new file mode 100644
index 0000000..b23f396
--- /dev/null
+++ b/scripts/monitoring/ntp.pl
@@ -0,0 +1,479 @@
+#!/usr/bin/perl -w
+;#
+;# ntp.pl,v 3.1 1993/07/06 01:09:09 jbj Exp
+;#
+;# process loop filter statistics file and either
+;#     - show statistics periodically using gnuplot
+;#     - or print a single plot
+;#
+;#  Copyright (c) 1992 
+;#  Rainer Pruy Friedrich-Alexander Universitaet Erlangen-Nuernberg
+;#
+;#
+;#############################################################
+
+package ntp;
+
+$NTP_version = 2;
+$ctrl_mode=6;
+
+$byte1 = (($NTP_version & 0x7)<< 3) & 0x34 | ($ctrl_mode & 0x7);
+$MAX_DATA = 468;
+
+$sequence = 0;			# initial sequence number incred before used
+$pad=4;
+$do_auth=0;			# no possibility today
+$keyid=0;
+;#list if known keys (passwords)
+%KEYS = ( 0, "\200\200\200\200\200\200\200\200",
+	 );
+
+;#-----------------------------------------------------------------------------
+;# access routines for ntp control packet
+    ;# NTP control message format
+    ;#  C  LI|VN|MODE  LI 2bit=00  VN 3bit=2(3) MODE 3bit=6 : $byte1
+    ;#  C  R|E|M|Op    R response  E error    M more   Op opcode
+    ;#  n  sequence
+    ;#  n  status
+    ;#  n  associd
+    ;#  n  offset
+    ;#  n  count
+    ;#  a+ data (+ padding)
+    ;#  optional authentication data
+    ;#  N  key
+    ;#  N2 checksum
+    
+;# first byte of packet
+sub pkt_LI   { return ($_[$[] >> 6) & 0x3; }
+sub pkt_VN   { return ($_[$[] >> 3) & 0x7; }
+sub pkt_MODE { return ($_[$[]     ) & 0x7; }
+
+;# second byte of packet
+sub pkt_R  { return ($_[$[] & 0x80) == 0x80; }
+sub pkt_E  { return ($_[$[] & 0x40) == 0x40; }
+sub pkt_M  { return ($_[$[] & 0x20) == 0x20; }
+sub pkt_OP { return $_[$[] & 0x1f; }
+
+;#-----------------------------------------------------------------------------
+
+sub setkey
+{
+    local($id,$key) = @_;
+
+    $KEYS{$id} = $key if (defined($key));
+    if (! defined($KEYS{$id}))
+    {
+	warn "Key $id not yet specified - key not changed\n";
+	return undef;
+    }
+    return ($keyid,$keyid = $id)[$[];
+}
+
+;#-----------------------------------------------------------------------------
+sub numerical { $a <=> $b; }
+
+;#-----------------------------------------------------------------------------
+
+sub send	#'
+{
+    local($fh,$opcode, $associd, $data,$address) = @_;
+    $fh = caller(0)."'$fh";
+
+    local($junksize,$junk,$packet,$offset,$ret);
+    $offset = 0;
+
+    $sequence++;
+    while(1)
+    {
+	$junksize = length($data);
+	$junksize = $MAX_DATA if $junksize > $MAX_DATA;
+	
+	($junk,$data) = $data =~ /^(.{$junksize})(.*)$/;
+	$packet
+	    = pack("C2n5a".(($junk eq "") ? 0 : &pad($junksize+12,$pad)-12),
+		   $byte1,
+		   ($opcode & 0x1f) | ($data ? 0x20 : 0),
+		   $sequence,
+		   0, $associd,
+		   $offset, $junksize, $junk);
+	if ($do_auth)
+	{
+	    ;# not yet
+	}
+	$offset += $junksize;
+
+	if (defined($address))
+	{
+	    $ret = send($fh, $packet, 0, $address);
+	}
+	else
+	{
+	    $ret = send($fh, $packet, 0);
+	}
+
+	if (! defined($ret))
+	{
+	    warn "send failed: $!\n";
+	    return undef;
+	}
+	elsif ($ret != length($packet))
+	{
+	    warn "send failed: sent only $ret from ".length($packet). "bytes\n";
+	    return undef;
+	}
+	return $sequence unless $data;
+    }
+}
+
+;#-----------------------------------------------------------------------------
+;# status interpretation
+;#
+sub getval
+{
+    local($val,*list) = @_;
+    
+    return $list{$val} if defined($list{$val});
+    return sprintf("%s#%d",$list{"-"},$val) if defined($list{"-"});
+    return "unknown-$val";
+}
+
+;#---------------------------------
+;# system status
+;#
+;# format: |LI|CS|SECnt|SECode| LI=2bit CS=6bit SECnt=4bit SECode=4bit
+sub ssw_LI     { return ($_[$[] >> 14) & 0x3; }
+sub ssw_CS     { return ($_[$[] >> 8)  & 0x3f; }
+sub ssw_SECnt  { return ($_[$[] >> 4)  & 0xf; }
+sub ssw_SECode { return $_[$[] & 0xf; }
+
+%LI = ( 0, "leap_none",  1, "leap_add_sec", 2, "leap_del_sec", 3, "sync_alarm", "-", "leap");
+%ClockSource = (0, "sync_unspec",
+		1, "sync_lf_clock",
+		2, "sync_uhf_clock",
+		3, "sync_hf_clock",
+		4, "sync_local_proto",
+		5, "sync_ntp",
+		6, "sync_udp/time",
+		7, "sync_wristwatch",
+		"-", "ClockSource",
+		);
+
+%SystemEvent = (0, "event_unspec",
+		1, "event_restart",
+		2, "event_fault",
+		3, "event_sync_chg",
+		4, "event_sync/strat_chg",
+		5, "event_clock_reset",
+		6, "event_bad_date",
+		7, "event_clock_excptn",
+		"-", "event",
+		);
+sub LI
+{
+    &getval(&ssw_LI($_[$[]),*LI);
+}
+sub ClockSource
+{
+    &getval(&ssw_CS($_[$[]),*ClockSource);
+}
+
+sub SystemEvent
+{
+    &getval(&ssw_SECode($_[$[]),*SystemEvent);
+}
+
+sub system_status
+{
+    return sprintf("%s, %s, %d event%s, %s", &LI($_[$[]), &ClockSource($_[$[]),
+		   &ssw_SECnt($_[$[]), ((&ssw_SECnt($_[$[])==1) ? "" : "s"),
+		   &SystemEvent($_[$[]));
+}
+;#---------------------------------
+;# peer status
+;#
+;# format: |PStat|PSel|PCnt|PCode| Pstat=6bit PSel=2bit PCnt=4bit PCode=4bit
+sub psw_PStat_config     { return ($_[$[] & 0x8000) == 0x8000; }
+sub psw_PStat_authenable { return ($_[$[] & 0x4000) == 0x4000; }
+sub psw_PStat_authentic  { return ($_[$[] & 0x2000) == 0x2000; }
+sub psw_PStat_reach      { return ($_[$[] & 0x1000) == 0x1000; }
+sub psw_PStat_sane       { return ($_[$[] & 0x0800) == 0x0800; }
+sub psw_PStat_dispok     { return ($_[$[] & 0x0400) == 0x0400; }
+sub psw_PStat { return ($_[$[] >> 10) & 0x3f; }
+sub psw_PSel  { return ($_[$[] >> 8)  & 0x3;  }
+sub psw_PCnt  { return ($_[$[] >> 4)  & 0xf; }
+sub psw_PCode { return $_[$[] & 0xf; }
+
+%PeerSelection = (0, "sel_reject",
+		  1, "sel_candidate",
+		  2, "sel_selcand",
+		  3, "sel_sys.peer",
+		  "-", "PeerSel",
+		  );
+%PeerEvent = (0, "event_unspec",
+	      1, "event_ip_err",
+	      2, "event_authen",
+	      3, "event_unreach",
+	      4, "event_reach",
+	      5, "event_clock_excptn",
+	      6, "event_stratum_chg",
+	      "-", "event",
+	      );
+
+sub PeerSelection
+{
+    &getval(&psw_PSel($_[$[]),*PeerSelection);
+}
+
+sub PeerEvent
+{
+    &getval(&psw_PCode($_[$[]),*PeerEvent);
+}
+
+sub peer_status
+{
+    local($x) = ("");
+    $x .= "config,"     if &psw_PStat_config($_[$[]);
+    $x .= "authenable," if &psw_PStat_authenable($_[$[]);
+    $x .= "authentic,"  if &psw_PStat_authentic($_[$[]);
+    $x .= "reach,"      if &psw_PStat_reach($_[$[]);
+    $x .= &psw_PStat_sane($_[$[]) ? "sane," : "insane,";
+    $x .= "hi_disp," unless &psw_PStat_dispok($_[$[]);
+
+    $x .= sprintf(" %s, %d event%s, %s", &PeerSelection($_[$[]),
+		  &psw_PCnt($_[$[]), ((&psw_PCnt($_[$[]) == 1) ? "" : "s"),
+		  &PeerEvent($_[$[]));
+    return $x;
+}
+
+;#---------------------------------
+;# clock status
+;#
+;# format: |CStat|CEvnt| CStat=8bit CEvnt=8bit
+sub csw_CStat { return ($_[$[] >> 8) & 0xff; }
+sub csw_CEvnt { return $_[$[] & 0xff; }
+
+%ClockStatus = (0, "clk_nominal",
+		1, "clk_timeout",
+		2, "clk_badreply",
+		3, "clk_fault",
+		4, "clk_prop",
+		5, "clk_baddate",
+		6, "clk_badtime",
+		"-", "clk",
+	       );
+
+sub clock_status
+{
+    return sprintf("%s, last %s",
+		   &getval(&csw_CStat($_[$[]),*ClockStatus),
+		   &getval(&csw_CEvnt($_[$[]),*ClockStatus));
+}
+
+;#---------------------------------
+;# error status
+;#
+;# format: |Err|reserved|  Err=8bit
+;#
+sub esw_Err { return ($_[$[] >> 8) & 0xff; }
+
+%ErrorStatus = (0, "err_unspec",
+		1, "err_auth_fail",
+		2, "err_invalid_fmt",
+		3, "err_invalid_opcode",
+		4, "err_unknown_assoc",
+		5, "err_unknown_var",
+		6, "err_invalid_value",
+		7, "err_adm_prohibit",
+		);
+
+sub error_status
+{
+    return sprintf("%s", &getval(&esw_Err($_[$[]),*ErrorStatus));
+}
+
+;#-----------------------------------------------------------------------------
+;#
+;# cntrl op name translation
+
+%CntrlOpName = (1, "read_status",
+		2, "read_variables",
+		3, "write_variables",
+		4, "read_clock_variables",
+		5, "write_clock_variables",
+		6, "set_trap",
+		7, "trap_response",
+		31, "unset_trap", # !!! unofficial !!!
+		"-", "cntrlop",
+		);
+
+sub cntrlop_name
+{
+    return &getval($_[$[],*CntrlOpName);
+}
+
+;#-----------------------------------------------------------------------------
+
+$STAT_short_pkt = 0;
+$STAT_pkt = 0;
+
+;# process a NTP control message (response) packet
+;# returns a list ($ret,$data,$status,$associd,$op,$seq,$auth_keyid)
+;#      $ret: undef     --> not yet complete
+;#            ""        --> complete packet received
+;#            "ERROR"   --> error during receive, bad packet, ...
+;#          else        --> error packet - list may contain useful info
+
+
+sub handle_packet
+{
+    local($pkt,$from) = @_;	# parameters
+    local($len_pkt) = (length($pkt));
+;#    local(*FRAGS,*lastseen);
+    local($li_vn_mode,$r_e_m_op,$seq,$status,$associd,$offset,$count,$data);
+    local($autch_keyid,$auth_cksum);
+
+    $STAT_pkt++;
+    if ($len_pkt < 12)
+    {
+	$STAT_short_pkt++;
+	return ("ERROR","short packet received");
+    }
+
+    ;# now break packet apart
+    ($li_vn_mode,$r_e_m_op,$seq,$status,$associd,$offset,$count,$data) =
+	unpack("C2n5a".($len_pkt-12),$pkt);
+    $data=substr($data,$[,$count);
+    if ((($len_pkt - 12) - &pad($count,4)) >= 12)
+    {
+	;# looks like an authenticator
+	($auth_keyid,$auth_cksum) =
+	    unpack("Na8",substr($pkt,$len_pkt-12+$[,12));
+	$STAT_auth++;
+	;# no checking of auth_cksum (yet ?)
+    }
+
+    if (&pkt_VN($li_vn_mode) != $NTP_version)
+    {
+	$STAT_bad_version++;
+	return ("ERROR","version ".&pkt_VN($li_vn_mode)."packet ignored");
+    }
+
+    if (&pkt_MODE($li_vn_mode) != $ctrl_mode)
+    {
+	$STAT_bad_mode++;
+	return ("ERROR", "mode ".&pkt_MODE($li_vn_mode)." packet ignored");
+    }
+    
+    ;# handle single fragment fast
+    if ($offset == 0 && &pkt_M($r_e_m_op) == 0)
+    {
+	$STAT_single_frag++;
+	if (&pkt_E($r_e_m_op))
+	{
+	    $STAT_err_pkt++;
+	    return (&error_status($status),
+		    $data,$status,$associd,&pkt_OP($r_e_m_op),$seq,
+		    $auth_keyid);
+	}
+	else
+	{
+	    return ("",
+		    $data,$status,$associd,&pkt_OP($r_e_m_op),$seq,
+		    $auth_keyid);
+	}
+    }
+    else
+    {
+	;# fragment - set up local name space
+	$id = "$from$seq".&pkt_OP($r_e_m_op);
+	$ID{$id} = 1;
+	*FRAGS = "$id FRAGS";
+	*lastseen = "$id lastseen";
+	
+	$STAT_frag++;
+	
+	$lastseen = 1 if !&pkt_M($r_e_m_op);
+	if (!defined(%FRAGS))
+	{
+	    print((&pkt_M($r_e_m_op) ? " more" : "")."\n");
+	    $FRAGS{$offset} = $data;
+	    ;# save other info
+	    @FRAGS = ($status,$associd,&pkt_OP($r_e_m_op),$seq,$auth_keyid,$r_e_m_op);
+	}
+	else
+	{
+	    print((&pkt_M($r_e_m_op) ? " more" : "")."\n");
+	    ;# add frag to previous - combine on the fly
+	    if (defined($FRAGS{$offset}))
+	    {
+		$STAT_dup_frag++;
+		return ("ERROR","duplicate fragment at $offset seq=$seq");
+	    }
+	    
+	    $FRAGS{$offset} = $data;
+	    
+	    undef($loff);
+	    foreach $off (sort numerical keys(%FRAGS))
+	    {
+		next unless defined($FRAGS{$off});
+		if (defined($loff) &&
+		    ($loff + length($FRAGS{$loff})) == $off)
+		{
+		    $FRAGS{$loff} .= $FRAGS{$off};
+		    delete $FRAGS{$off};
+		    last;
+		}
+		$loff = $off;
+	    }
+
+	    ;# return packet if all frags arrived
+	    ;# at most two frags with possible padding ???
+	    if ($lastseen && defined($FRAGS{0}) &&
+		(((scalar(@x=sort numerical keys(%FRAGS)) == 2) &&
+		  (length($FRAGS{0}) + 8) > $x[$[+1]) ||
+		  (scalar(@x=sort numerical keys(%FRAGS)) < 2)))
+	    {
+		@x=((&pkt_E($r_e_m_op) ? &error_status($status) : ""),
+		    $FRAGS{0},@FRAGS);
+		&pkt_E($r_e_m_op) ? $STAT_err_frag++ : $STAT_frag_all++;
+		undef(%FRAGS);
+		undef(@FRAGS);
+		undef($lastseen);
+		delete $ID{$id};
+		&main'clear_timeout($id);
+		return @x;
+	    }
+	    else
+	    {
+		&main'set_timeout($id,time+$timeout,"&ntp'handle_packet_timeout(\"".unpack("H*",$id)."\");"); #'";
+	    }
+	}
+	return (undef);
+    }
+}
+
+sub handle_packet_timeout
+{
+    local($id) = @_;
+    local($r_e_m_op,*FRAGS,*lastseen,@x) = (@FRAGS[$[+5]);
+    
+    *FRAGS = "$id FRAGS";
+    *lastseen = "$id lastseen";
+    
+    @x=((&pkt_E($r_e_m_op) ? &error_status($status) : "TIMEOUT"),
+	$FRAGS{0},@FRAGS[$[ .. $[+4]);
+    $STAT_frag_timeout++;
+    undef(%FRAGS);
+    undef(@FRAGS);
+    undef($lastseen);
+    delete $ID{$id};
+    return @x;
+}
+
+
+sub pad
+{
+    return $_[$[+1] * int(($_[$[] + $_[$[+1] - 1) / $_[$[+1]);
+}
+
+1;
diff --git a/scripts/monitoring/ntploopstat b/scripts/monitoring/ntploopstat
new file mode 100644
index 0000000..7583c7c
--- /dev/null
+++ b/scripts/monitoring/ntploopstat
@@ -0,0 +1,458 @@
+#!/usr/bin/perl -w
+# --*-perl-*-
+;#
+;# ntploopstat,v 3.1 1993/07/06 01:09:11 jbj Exp
+;# 
+;# Poll NTP server using NTP mode 7 loopinfo request.
+;# Log info and timestamp to file for processing by ntploopwatch.
+;#
+;#
+;# Copyright (c) 1992
+;# Rainer Pruy Friedrich-Alexander Universitaet Erlangen-Nuernberg
+;#
+;#################################################################
+;#
+;# The format written to the logfile is the same as used by xntpd
+;# for the loopstats file.
+;# This script however allows to gather loop filter statistics from
+;# remote servers where you do not have access to the loopstats logfile.
+;#
+;# Please note: Communication delays affect the accuracy of the
+;#              timestamps recorded. Effects from these delays will probably
+;#              not show up, as timestamps are recorded to the second only.
+;#              (Should have implemented &gettimeofday()..)
+;#
+
+$0 =~ s!^.*/([^/]+)$!$1!;		# beautify script name
+
+$ntpserver = 'localhost';		# default host to poll
+$delay = 60;				# default sampling rate
+				       ;# keep it shorter than minpoll (=64)
+				       ;# to get all values
+
+require "ctime.pl";
+;# handle bug in early ctime distributions
+$ENV{'TZ'} = 'MET' unless defined($ENV{'TZ'}) || $] > 4.010;
+
+if (defined(@ctime'MoY))
+{
+    *MonthName = *ctime'MoY;
+}
+else
+{
+    @MonthName = ('Jan','Feb','Mar','Apr','May','Jun',
+		  'Jul','Aug','Sep','Oct','Nov','Dec');
+}
+
+;# this routine can be redefined to point to syslog if necessary
+sub msg
+{
+    return unless $verbose;
+
+    print  STDERR "$0: ";
+    printf STDERR @_;
+}
+
+;#############################################################
+;#
+;# process command line
+$usage = <<"E-O-S";
+
+usage:
+  $0 [-d<delay>] [-t<timeout>] [-l <logfile>] [-v] [ntpserver]
+E-O-S
+
+while($_ = shift)
+{
+    /^-v(\d*)$/ && ($verbose=($1 eq '') ? 1 : $1,1) && next;
+    /^-d(\d*)$/ &&
+	do {
+	    ($1 ne '') && ($delay = $1,1) && next;
+	    @ARGV || die("$0: delay value missing after -d\n$usage");
+	    $delay = shift;
+	    ($delay  >= 0) || die("$0: bad delay value \"$delay\"\n$usage");
+	    next;
+	};
+    /^-l$/ &&
+	do {
+	    @ARGV || die("$0: logfile missing after -l\n$usage");
+	    $logfile = shift;
+	    next;
+	};
+    /^-t(\d*(\.\d*)?)$/ &&
+	do {
+	    ($1 ne '') && ($timeout = $1,1) && next;
+	    @ARGV || die("$0: timeout value missing after -t\n$usage\n");
+	    $timeout = shift;
+	    ($timeout > 0) ||
+		die("$0: bad timeout value \"$timeout\"\n$usage");
+	    next;
+	};
+    
+    /^-/ && die("$0: unknown option \"$_\"\n$usage");
+
+    ;# any other argument is server to poll
+    $ntpserver = $_;
+    last;
+}
+
+if (@ARGV)
+{
+    warn("unexpected arguments: ".join(" ",@ARGV).".\n");
+    die("$0: too many servers specified\n$usage");
+}
+
+;# logfile defaults to include server name
+;# The name of the current month is appended and
+;# the file is opened and closed for each sample.
+;#
+$logfile = "loopstats:$ntpserver." unless defined($logfile);
+$timeout = 12.0 unless defined($timeout); # wait $timeout seconds for reply
+
+$MAX_FAIL = 60;				# give up after $MAX_FAIL failed polls
+
+
+$MJD_1970 = 40587;
+
+if (eval 'require "syscall.ph";')
+{
+    if (defined(&SYS_gettimeofday))
+    {
+	;# assume standard
+ 	;# gettimeofday(struct timeval *tp,struct timezone *tzp)
+	;# syntax for gettimeofday syscall
+ 	;# tzp = NULL -> undef
+	;# tp = (long,long)
+	eval 'sub time { local($tz) = pack("LL",0,0);
+              (&msg("gettimeofday failed: $!\n"),
+	      return (time))
+	      unless syscall(&SYS_gettimeofday,$tz,undef) == 0;
+              local($s,$us) = unpack("LL",$tz);
+              return $s + $us/1000000; }';
+	local($t1,$t2,$t3);
+	$t1 = time;
+	eval '$t2 = &time;';
+	$t3 = time;
+	die("$0: gettimeofday failed: $@.\n") if defined($@) && $@;
+	die("$0: gettimeofday inconsistency time=$t1,gettimeofday=$t2,time=$t2\n")
+	    if (int($t1) != int($t2) && int($t3) != int($t2));
+	&msg("Using gettimeofday for timestamps\n");
+    }
+    else
+    {
+	warn("No gettimeofday syscall found - using time builtin for timestamps\n");
+        eval 'sub time { return time; }';
+    }
+}
+else
+{
+    warn("No syscall.ph file found - using time builtin for timestamps\n");
+    eval 'sub time { return time; }';
+}
+
+
+;#------------------+
+;# from ntp_request.h
+;#------------------+
+
+;# NTP mode 7 packet format:
+;#	Byte 1:     ResponseBit MoreBit Version(3bit) Mode(3bit)==7
+;#      Byte 2:     AuthBit Sequence #   - 0 - 127 see MoreBit
+;#      Byte 3:     Implementation #
+;#      Byte 4:     Request Code
+;#
+;#      Short 1:    Err(3bit) NumItems(12bit)
+;#      Short 2:    MBZ(3bit)=0 DataItemSize(12bit)
+;#      0 - 500 byte Data 
+;#  if AuthBit is set:
+;#      Long:       KeyId
+;#      2xLong:     AuthCode
+
+;# 
+$IMPL_XNTPD  = 2;
+$REQ_LOOP_INFO = 8;
+
+
+;# request packet for REQ_LOOP_INFO:
+;#     B1:  RB=0 MB=0 V=2 M=7 
+;#     B2:  S# = 0
+;#     B3:  I# = IMPL_XNTPD
+;#     B4:  RC = REQ_LOOP_INFO
+;#     S1:  E=0 NI=0
+;#     S2:  MBZ=0 DIS=0
+;#     data:  32 byte 0 padding
+;#            8byte timestamp if encryption, 0 padding otherwise
+$loopinfo_reqpkt = 
+    pack("CCCC nn x32 x8", 0x17, 0, $IMPL_XNTPD, $REQ_LOOP_INFO, 0, 0);
+
+;# ignore any auth data in packets
+$loopinfo_response_size =
+    1+1+1+1+2+2			# header size like request pkt
+    + 8				# l_fp last_offset
+    + 8				# l_fp drift_comp
+    + 4				# u_long compliance
+    + 4				# u_long watchdog_timer
+    ;
+$loopinfo_response_fmt    = "C4n2N2N2NN"; 
+$loopinfo_response_fmt_v2 = "C4n2N2N2N2N"; 
+
+;#
+;# prepare connection to server
+;# 
+
+;# workaround for broken socket.ph on dynix_ptx
+eval 'sub INTEL {1;}' unless defined(&INTEL);
+eval 'sub ATT {1;}'  unless defined(&ATT);
+
+require "sys/socket.ph";
+
+require 'netinet/in.ph';
+
+;# if you do not have netinet/in.ph enable the following lines
+;#eval 'sub INADDR_ANY { 0x00000000; }' unless defined(&INADDR_ANY);
+;#eval 'sub IPPRORO_UDP { 17; }' unless defined(&IPPROTO_UDP);
+
+if ($ntpserver =~ /^((0x?)?\w+)\.((0x?)?\w+)\.((0x?)?\w+)\.((0x?)?\w+)$/)
+{
+    local($a,$b,$c,$d) = ($1,$3,$5,$7);
+    $a = oct($a) if defined($2);
+    $b = oct($b) if defined($4);
+    $c = oct($c) if defined($6);
+    $d = oct($d) if defined($8);
+    $server_addr = pack("C4", $a,$b,$c,$d);
+
+    $server_mainname
+	= (gethostbyaddr($server_addr,&AF_INET))[$[] || $ntpserver;
+}
+else
+{
+    ($server_mainname,$server_addr)
+	= (gethostbyname($ntpserver))[$[,$[+4];
+
+    die("$0: host \"$ntpserver\" is unknown\n")
+	unless defined($server_addr);
+}
+&msg ("Address of server \"$ntpserver\" is \"%d.%d.%d.%d\"\n",
+      unpack("C4",$server_addr));
+
+$proto_udp = (getprotobyname('udp'))[$[+2] || &IPPROTO_UDP;
+ 
+$ntp_port =
+    (getservbyname('ntp','udp'))[$[+2] ||
+    (warn "Could not get port number for service \"ntp/udp\" using 123\n"),
+    ($ntp_port=123);
+ 
+;# 
+0 && &SOCK_DGRAM;		# satisfy perl -w ...
+socket(S, &AF_INET, &SOCK_DGRAM, $proto_udp) ||
+    die("Cannot open socket: $!\n");
+
+bind(S, pack("S n N x8", &AF_INET, 0, &INADDR_ANY)) ||
+    die("Cannot bind: $!\n");
+ 
+($my_port, $my_addr) = (unpack("S n a4 x8",getsockname(S)))[$[+1,$[+2];
+
+&msg("Listening at address %d.%d.%d.%d port %d\n",
+     unpack("C4",$my_addr), $my_port);
+
+$server_inaddr = pack("Sna4x8", &AF_INET, $ntp_port, $server_addr);
+
+;############################################################
+;#
+;# the main loop:
+;#	send request
+;#      get reply
+;#      wait til next sample time
+
+undef($lasttime);
+$lostpacket = 0;
+
+while(1)
+{
+    $stime = &time;
+
+    &msg("Sending request $stime...\n");
+
+    $ret = send(S,$loopinfo_reqpkt,0,$server_inaddr);
+
+    if (! defined($ret) || $ret < length($loopinfo_reqpkt))
+    {
+	warn("$0: send failed ret=($ret): $!\n");
+	$fail++;
+	next;
+    }
+
+    &msg("Waiting for reply...\n");
+
+    $mask = ""; vec($mask,fileno(S),1) = 1;
+    $ret = select($mask,undef,undef,$timeout);
+
+    if (! defined($ret))
+    {
+	warn("$0: select failed: $!\n");
+	$fail++;
+	next;
+    }
+    elsif ($ret == 0)
+    {
+	warn("$0: request to $ntpserver timed out ($timeout seconds)\n");
+	;# do not count this event as failure
+	;# it usually this happens due to dropped udp packets on noisy and
+	;# havily loaded lines, so just try again;
+	$lostpacket = 1;
+	next;
+    }
+
+    &msg("Receiving reply...\n");
+
+    $len = 520;				# max size of a mode 7 packet
+    $reply = "";			# just make it defined for -w
+    $ret = recv(S,$reply,$len,0);
+
+    if (!defined($ret))
+    {
+	warn("$0: recv failed: $!\n");
+	$fail++;
+	next;
+    }
+
+    $etime = &time;
+    &msg("Received at\t$etime\n");
+
+    ;#$time = ($stime + $etime) / 2; # symmetric delay assumed
+    $time = $etime;		# the above assumption breaks for X25
+			       ;# so taking etime makes timestamps be a
+			       ;# little late, but keeps them increasing
+			       ;# monotonously
+
+    &msg(sprintf("Reply from %d.%d.%d.%d took %f seconds\n",
+		 (unpack("SnC4",$ret))[$[+2 .. $[+5], ($etime - $stime)));
+
+    if ($len < $loopinfo_response_size)
+    {
+	warn("$0: short packet ($len bytes) received ($loopinfo_response_size bytes expected\n");
+	$fail++;
+	next;
+    }
+    
+    ($b1,$b2,$b3,$b4,$s1,$s2,
+     $offset_i,$offset_f,$drift_i,$drift_f,$compl,$watchdog)
+	= unpack($loopinfo_response_fmt,$reply);
+
+    ;# check reply
+    if (($s1 >> 12) != 0)	      # error !
+    {
+	die("$0: got error reply ".($s1>>12)."\n");
+    }
+    if (($b1 != 0x97 && $b1 != 0x9f) || # Reply NotMore V=2 M=7
+	($b2 != 0 && $b2 != 0x80) ||	# S=0 Auth no/yes
+	$b3 != $IMPL_XNTPD ||		# ! IMPL_XNTPD
+	$b4 != $REQ_LOOP_INFO ||	# Ehh.. not loopinfo reply ?
+	$s1 != 1 ||			# ????
+	($s2 != 24 && $s2 != 28)	# 
+	)
+    {
+	warn("$0: Bad/unexpected reply from server:\n");
+	warn("  \"".unpack("H*",$reply)."\"\n");
+	warn("   ".sprintf("b1=%x b2=%x b3=%x b4=%x s1=%d s2=%d\n",
+			   $b1,$b2,$b3,$b4,$s1,$s2));
+	$fail++;
+	next;
+    }
+    elsif ($s2 == 28)
+    {
+      ;# seems to be a version 2 xntpd
+      ($b1,$b2,$b3,$b4,$s1,$s2,
+       $offset_i,$offset_f,$drift_i,$drift_f,$compl_i,$compl_f,$watchdog)
+	  = unpack($loopinfo_response_fmt_v2,$reply);
+      $compl = &lfptoa($compl_i, $compl_f);
+    }
+
+    $time -= $watchdog;
+
+    $offset = &lfptoa($offset_i, $offset_f);
+    $drift  = &lfptoa($drift_i, $drift_f);
+
+    &log($time,$offset,$drift,$compl) && ($fail = 0);;
+}
+continue
+{
+    die("$0: Too many failures - terminating\n") if $fail > $MAX_FAIL;
+    &msg("Sleeping " . ($lostpacket ? ($delay / 2) : $delay) . " seconds...\n");
+
+    sleep($lostpacket ? ($delay / 2) : $delay);
+    $lostpacket = 0;
+}
+
+sub log
+{
+    local($time,$offs,$freq,$cmpl) = @_;
+    local($y,$m,$d);
+    local($fname,$suff) = ($logfile);
+
+
+    ;# silently drop sample if distance to last sample is too low
+    if (defined($lasttime) && ($lasttime + 2) >= $time)
+    {
+      &msg("Dropped packet - old sample\n");
+      return 1;
+    }
+
+    ;# $suff determines which samples end up in the same file
+    ;# could have used $year (;-) or WeekOfYear, DayOfYear,....
+    ;# Change it to your suit...
+
+    ($d,$m,$y) = (localtime($time))[$[+3 .. $[+5];
+    $suff = sprintf("%04d%02d%02d",$y+1900,$m+1,$d);
+    $fname .= $suff;
+    if (!open(LOG,">>$fname"))
+    {
+	warn("$0: open($fname) failed: $!\n");
+	$fail++;
+	return 0;
+    }
+    else
+    {
+	;# file format
+	;#          MJD seconds offset drift compliance
+	printf LOG ("%d %.3lf %.8lf %.7lf %d\n",
+		    int($time/86400)+$MJD_1970,
+		    $time - int($time/86400) * 86400,
+		    $offs,$freq,$cmpl);
+	close(LOG);
+	$lasttime = $time;
+    }
+    return 1;
+}
+
+;# see ntp_fp.h to understand this
+sub lfptoa
+{
+    local($i,$f) = @_;
+    local($sign) = 1;
+
+    
+    if ($i & 0x80000000)
+    {
+	if ($f == 0)
+	{
+	    $i = -$i;
+	}
+	else
+	{
+	    $f = -$f;
+	    $i = ~$i;
+	    $i += 1;			# 2s complement
+	}
+	$sign = -1;
+	;#print "NEG: $i $f\n";
+    }
+    else
+    {
+	;#print "POS: $i $f\n";
+    }
+    ;# unlike xntpd I have perl do the dirty work.
+    ;# Using floats here may affect precision, but
+    ;# currently these bits aren't significant anyway
+    return $sign * ($i + $f/2**32);    
+}
diff --git a/scripts/monitoring/ntploopwatch b/scripts/monitoring/ntploopwatch
new file mode 100644
index 0000000..db661d3
--- /dev/null
+++ b/scripts/monitoring/ntploopwatch
@@ -0,0 +1,1667 @@
+#!/usr/bin/perl -w
+;# --*-perl-*--
+;#
+;# /src/NTP/ntp-4/scripts/monitoring/ntploopwatch,v 4.3 1999/02/21 12:18:38 kardel RELEASE_19990228_A
+;# RELEASE_19990228_A
+;#
+;# process loop filter statistics file and either
+;#     - show statistics periodically using gnuplot
+;#     - or print a single plot
+;#
+;#  Copyright (c) 1992-1998 
+;#  Rainer Pruy, Friedrich-Alexander Universität Erlangen-Nürnberg
+;#
+;#
+;#############################################################
+$0 =~ s!^.*/([^/]+)$!$1!;
+$F = ' ' x length($0);
+$|=1;
+
+$ENV{'SHELL'} = '/bin/sh'; # use bourne shell
+
+undef($config);
+undef($workdir);
+undef($PrintIt);
+undef($samples);
+undef($StartTime);
+undef($EndTime);
+($a,$b) if 0;			# keep -w happy
+$usage = <<"E-O-P";
+usage:
+  to watch statistics permanently:
+     $0 [-v[<level>]] [-c <config-file>] [-d <working-dir>]
+     $F [-h <hostname>]
+
+  to get a single print out specify also
+     $F -P[<printer>] [-s<samples>]
+     $F               [-S <start-time>] [-E <end-time>]
+     $F               [-Y <MaxOffs>] [-y <MinOffs>]
+
+If You like long option names, You can use:
+    -help
+    -c    +config
+    -d    +directory
+    -h    +host
+    -v    +verbose[=<level>]
+    -P    +printer[=<printer>]
+    -s    +samples[=<samples>]
+    -S    +starttime
+    -E    +endtime
+    -Y    +maxy
+    -y    +miny
+
+If <printer> contains a '/' (slash character) output is directed to 
+a file of this name instead of delivered to a printer.
+E-O-P
+
+;# add directory to look for lr.pl and timelocal.pl (in front of current list)
+unshift(@INC,"/usr/local/xntp/monitoring");
+
+require "lr.pl";	# linear regresion routines
+
+$MJD_1970 = 40587;		# from ntp.h (V3)
+$RecordSize = 48;		# usually a line fits into 42 bytes
+$MinClip = 1;		# clip Y scales with greater range than this
+
+;# largest extension of Y scale from mean value, factor for standart deviation
+$FuzzLow = 2.2;			# for side closer to zero
+$FuzzBig = 1.8;			# for side farther from zero
+
+require "ctime.pl";
+require "timelocal.pl";
+;# early distributions of ctime.pl had a bug
+$ENV{'TZ'} = 'MET' unless defined $ENV{'TZ'} || $[ > 4.010;
+if (defined(@ctime'MoY))
+{
+  *Month=*ctime'MoY;
+  *Day=*ctime'DoW;
+} 					# ' re-sync emacs fontification
+else
+{
+  @Month = ('Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec');
+  @Day   = ('Sun','Mon','Tue','Wed','Thu','Fri','Sat');
+}
+print @ctime'DoW if 0; # ' re-sync emacs fontification
+
+;# max number of days per month
+@MaxNumDaysPerMonth = (31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
+
+;# config settable parameters
+$delay = 60;
+$srcprefix = "./var\@\$STATHOST/loopstats.";
+$showoffs = 1;
+$showfreq = 1;
+$showcmpl = 0;
+$showoreg = 0;
+$showfreg = 0;
+undef($timebase);
+undef($freqbase);
+undef($cmplscale);
+undef($MaxY);
+undef($MinY);
+$deltaT  = 512; # indicate sample data gaps greater than $deltaT seconds
+$verbose = 1;
+
+while($_ = shift(@ARGV))
+{
+    (/^[+-]help$/) && die($usage);
+    
+    (/^-c$/ || /^\+config$/) &&
+	(@ARGV || die($usage), $config = shift(@ARGV), next);
+
+    (/^-d$/ || /^\+directory$/) &&
+	(@ARGV || die($usage), $workdir = shift(@ARGV), next);
+
+    (/^-h$/ || /^\+host$/) &&
+	(@ARGV || die($usage), $STATHOST = shift, next);
+    
+    (/^-v(\d*)$/ || /^\+verbose=?(\d*)$/) &&
+	($verbose=($1 eq "") ? 1 : $1, next);
+
+    (/^-P(\S*)$/ || /^\+[Pp]rinter=?(\S*)$/) &&
+	($PrintIt = $1, $verbose==1 && ($verbose = 0), next);
+
+    (/^-s(\d*)$/ || /^\+samples=?(\d*)$/) &&
+	(($samples = ($1 eq "") ? (shift || die($usage)): $1), next);
+    
+    (/^-S$/ || /^\+[Ss]tart[Tt]ime$/) &&
+	(@ARGV || die($usage), $StartTime=&date_time_spec2seconds(shift),next);
+
+    (/^-E$/ || /^\+[Ee]nd[Tt]ime$/) &&
+	(@ARGV || die($usage), $EndTime = &date_time_spec2seconds(shift),next);
+    
+    (/^-Y$/ || /^\+[Mm]ax[Yy]$/) &&
+	(@ARGV || die($usage), $MaxY = shift, next);
+    
+    (/^-y$/ || /^\+[Mm]in[Yy]$/) &&
+	(@ARGV || die($usage), $MinY = shift, next);
+    
+    die("$0: unexpected argument \"$_\"\n$usage");
+}
+
+if (defined($workdir))
+{
+  chdir($workdir) ||
+      die("$0: failed to change working dir to \"$workdir\": $!\n");
+}
+
+$PrintIt = "ps" if defined($PrintIt) && $PrintIt eq "";
+
+if (!defined($PrintIt))
+{
+    defined($samples) &&
+	print "WARNING: your samples value may be shadowed by config file settings\n";
+    defined($StartTime) &&
+	print "WARNING: your StartTime value may be shadowed by config file settings\n";
+    defined($EndTime) &&
+	print "WARNING: your EndTime value may be shadowed by config file settings\n";
+    defined($MaxY) &&
+	print "WARNING: your MaxY value may be shadowed by config file settings\n";
+    defined($MinY) &&
+	print "WARNING: your MinY value may be shadowed by config file settings\n";
+	
+    ;# check operating environment
+    ;# 
+    ;# gnuplot usually has X support
+    ;# I vaguely remember there was one with sunview support
+    ;#
+    ;# If Your plotcmd can display graphics using some other method
+    ;# (Tek window,..) fix the following test
+    ;# (or may be, just disable it)
+    ;#
+    !(defined($ENV{'DISPLAY'}) || defined($ENV{'WINDOW_PARENT'})) &&
+	die("Need window system to monitor statistics\n");
+}
+
+;# configuration file
+$config = "loopwatch.config" unless defined($config);
+($STATHOST = $config) =~ s!.*loopwatch\.config.([^/\.]*)$!$1!
+    unless defined($STATHOST);
+($STATTAG = $STATHOST) =~ s/^([^\.\*\s]+)\..*$/$1/;
+
+$srcprefix =~ s/\$STATHOST/$STATHOST/g;
+
+;# plot command 
+@plotcmd=("gnuplot",
+	  '-title', "Ntp loop filter statistics $STATHOST",
+	  '-name', "NtpLoopWatch_$STATTAG");
+$tmpfile = "/tmp/ntpstat.$$";
+
+;# other variables
+$doplot = "";	# assembled command for @plotcmd to display plot
+undef($laststat);
+
+;# plot value ranges
+undef($mintime);
+undef($maxtime);
+undef($minoffs);
+undef($maxoffs);
+undef($minfreq);
+undef($maxfreq);
+undef($mincmpl);
+undef($maxcmpl);
+undef($miny);
+undef($maxy);
+
+;# stop operation if plot command dies
+sub sigchld
+{
+  local($pid) = wait;
+  unlink($tmpfile);
+  warn(sprintf("%s: %s died: exit status: %d signal %d\n",
+	      $0,
+	       (defined($Plotpid) && $Plotpid == $pid)
+	       ? "plotcmd" : "unknown child $pid",
+	       $?>>8,$? & 0xff)) if $?;
+  exit(1) if $? && defined($Plotpid) && $pid == $Plotpid;
+}
+&sigchld if 0;
+$SIG{'CHLD'} = "sigchld";
+$SIG{'CLD'} = "sigchld";
+
+sub abort
+{
+  unlink($tmpfile);
+  defined($Plotpid) && kill('TERM',$Plotpid);
+  die("$0: received signal SIG$_[$[] - exiting\n");
+}
+&abort if 0;	# make -w happy - &abort IS used
+$SIG{'INT'} = $SIG{'HUP'} = $SIG{'QUIT'} = $SIG{'TERM'} = $SIG{'PIPE'} = "abort";
+
+;#
+sub abs
+{
+  ($_[$[] < 0) ? -($_[$[]) : $_[$[];
+}
+
+sub boolval
+{
+  local($v) = ($_[$[]);
+
+  return 1 if ($v eq 'yes') || ($v eq 'y');
+  return 1 if ($v =~ /^[0-9]*$/) && ($v != 0);
+  return 0;
+}
+
+;#####################
+;# start of real work 
+
+print "starting plot command (" . join(" ",@plotcmd) . ")\n" if $verbose > 1;
+
+$Plotpid = open(PLOT,"|-");
+select((select(PLOT),$|=1)[$[]);	# make PLOT line bufferd
+
+defined($Plotpid) ||
+    die("$0: failed to start plot command: $!\n");
+
+unless ($Plotpid)
+{
+   ;# child == plot command
+   close(STDOUT);
+   open(STDOUT,">&STDERR") ||
+       die("$0: failed to redirect STDOUT of plot command: $!\n");
+   
+   print STDOUT "plot command running as $$\n";
+
+   exec @plotcmd;
+   die("$0: failed to exec (@plotcmd): $!\n");
+   exit(1); # in case ...
+}
+
+sub read_config
+{
+  local($at) = (stat($config))[$[+9];
+  local($_,$c,$v);
+
+  (undef($laststat),(print("stat $config failed: $!\n")),return) if ! defined($at);
+  return if (defined($laststat) && ($laststat == $at));
+  $laststat = $at;
+
+  print "reading configuration from \"$config\"\n" if $verbose;
+
+  open(CF,"<$config") ||
+      (warn("$0: failed to read \"$config\" - using old settings ($!)\n"),
+       return);
+  while(<CF>)
+  {
+    chop;
+    s/^([^\#]*[^\#\s]?)\s*\#.*$//;
+    next if /^\s*$/;
+
+    s/^\s*([^=\s]*)\s*=\s*(.*\S)\s*$/$1=$2/;
+
+    ($c,$v) = split(/=/,$_,2);
+    print "processing \"$c=$v\"\n" if $verbose > 3;
+    ($c eq "delay") && ($delay = $v,1) && next;
+    ($c eq 'samples') && (!defined($PrintIt) || !defined($samples)) &&
+	($samples = $v,1) && next;
+    ($c eq 'srcprefix') && (($srcprefix=$v)=~s/\$STATHOST/$STATHOST/g,1)
+	&& next;
+    ($c eq 'showoffs') &&
+	($showoffs = boolval($v),1) && next;
+    ($c eq 'showfreq') &&
+	($showfreq = boolval($v),1) && next;
+    ($c eq 'showcmpl') &&
+	($showcmpl = boolval($v),1) && next;
+    ($c eq 'showoreg') &&
+	($showoreg = boolval($v),1) && next;
+    ($c eq 'showfreg') &&
+	($showfreg = boolval($v),1) && next;
+
+    ($c eq 'exit') && (unlink($tmpfile),die("$0: exit by config request\n"));
+
+    ($c eq 'freqbase' ||
+     $c eq 'cmplscale') &&
+	do {
+	    if (! defined($v) || $v eq "" || $v eq 'dynamic')
+	    {
+	      eval "undef(\$$c);";
+	    }
+	    else
+	    {
+	      eval "\$$c = \$v;";
+	    }
+	    next;
+	};
+    ($c eq 'timebase') &&
+	do {
+	    if (! defined($v) || $v eq "" || $v eq "dynamic")
+	    {
+	      undef($timebase);
+	    }
+	    else
+	    {
+	      $timebase=&date_time_spec2seconds($v);
+	    }
+	};
+    ($c eq 'EndTime') &&
+	do {
+	    next if defined($EndTime) && defined($PrintIt);
+	    if (! defined($v) || $v eq "" || $v eq "none")
+	    {
+	      undef($EndTime);
+	    }
+	    else
+	    {
+	      $EndTime=&date_time_spec2seconds($v);
+	    }
+	};
+    ($c eq 'StartTime') &&
+	do {
+	    next if defined($StartTime) && defined($PrintIt);
+	    if (! defined($v) || $v eq "" || $v eq "none")
+	    {
+	      undef($StartTime);
+	    }
+	    else
+	    {
+	      $StartTime=&date_time_spec2seconds($v);
+	    }
+	};
+
+    ($c eq 'MaxY') &&
+	do {
+	    next if defined($MaxY) && defined($PrintIt);
+	    if (! defined($v) || $v eq "" || $v eq "none")
+	    {
+	      undef($MaxY);
+	    }
+	    else
+	    {
+	      $MaxY=$v;
+	    }
+	};
+
+    ($c eq 'MinY') &&
+	do {
+	    next if defined($MinY) && defined($PrintIt);
+	    if (! defined($v) || $v eq "" || $v eq "none")
+	    {
+	      undef($MinY);
+	    }
+	    else
+	    {
+	      $MinY=$v;
+	    }
+	};
+
+    ($c eq 'deltaT') &&
+	do {
+	    if (!defined($v) || $v eq "")
+	    {
+	      undef($deltaT);
+	    }
+	    else
+	    {
+	      $deltaT = $v;
+	    }
+	    next;
+	};
+    ($c eq 'verbose') && ! defined($PrintIt) &&
+	do {
+	     if (!defined($v) || $v == 0)
+	     {
+	       $verbose = 0;
+	     }
+	     else
+	     {
+	       $verbose = $v;
+	     }
+	     next;
+	};
+    ;# otherwise: silently ignore unrecognized config line
+  }
+  close(CF);
+  ;# set show defaults when nothing selected
+  $showoffs = $showfreq = $showcmpl = 1
+      unless $showoffs || $showfreq || $showcmpl;
+  if ($verbose > 3)
+  {
+    print  "new configuration:\n";
+    print  "   delay\t= $delay\n";
+    print  "   samples\t= $samples\n";
+    print  "   srcprefix\t= $srcprefix\n";
+    print  "   showoffs\t= $showoffs\n";
+    print  "   showfreq\t= $showfreq\n";
+    print  "   showcmpl\t= $showcmpl\n";
+    print  "   showoreg\t= $showoreg\n";
+    print  "   showfreg\t= $showfreg\n";
+    printf "   timebase\t= %s",defined($timebase)?&ctime($timebase):"dynamic\n";
+    printf "   freqbase\t= %s\n",defined($freqbase)  ?"$freqbase":"dynamic";
+    printf "   cmplscale\t= %s\n",defined($cmplscale)?"$cmplscale":"dynamic";
+    printf "   StartTime\t= %s",defined($StartTime)?&ctime($StartTime):"none\n";
+    printf "   EndTime\t= %s",  defined($EndTime) ?  &ctime($EndTime):"none\n";
+    printf "   MaxY\t= %s",defined($MaxY)? $MaxY      :"none\n";
+    printf "   MinY\t= %s",defined($MinY)? $MinY      :"none\n";
+    print  "   verbose\t= $verbose\n";
+  }
+print "configuration file read\n" if $verbose > 2;
+}
+
+sub make_doplot
+{
+    local($c) = ("");
+    local($fmt)
+	= ("%s \"%s\" using 1:%d title '%s <%lf %lf> %6s' with lines");
+    local($regfmt)
+	= ("%s ((%lf * x) + %lf) title 'lin. approx. %s (%f t[h]) %s %f <%f> %6s' with lines");
+    
+    $doplot = "    set title 'NTP loopfilter statistics for $STATHOST  " .
+	"(last $LastCnt samples from $srcprefix*)'\n";
+    
+    local($xts,$xte,$i,$t);
+    
+    local($s,$c) = ("");
+
+    ;# number of integral seconds to get at least 12 tic marks on x axis
+    $t = int(($maxtime - $mintime) / 12 + 0.5);
+    $t = 1 unless $t;		# prevent $t to be zero
+    foreach $i (30,
+		60,5*60,15*60,30*60,
+		60*60,2*60*60,6*60*60,12*60*60,
+		24*60*60,48*60*60)
+    {
+	last if $t < $i;
+	$t = $t - ($t % $i);
+    }
+    print "time label resolution: $t seconds\n" if $verbose > 1;
+    
+    ;# make gnuplot use wall clock time labels instead of NTP seconds
+    for ($c="", $i = $mintime - ($mintime % $t);
+	 $i <= $maxtime + $t;
+	 $i += $t, $c=",")
+    {
+	$s .= $c;
+	((int($i / $t) % 2) &&
+	 ($s .= sprintf("'' %lf",($i - $LastTimeBase)/3600))) ||
+	     (($t <= 60) &&
+	      ($s .= sprintf("'%d:%02d:%02d' %lf",
+			     (localtime($i))[$[+2,$[+1,$[+0],
+			     ($i - $LastTimeBase)/3600))) 
+		 || (($t <= 2*60*60) &&
+		     ($s .= sprintf("'%d:%02d' %lf",
+				    (localtime($i))[$[+2,$[+1],
+				    ($i - $LastTimeBase)/3600)))
+		     || (($t <= 12*60*60) &&
+			 ($s .= sprintf("'%s %d:00' %lf",
+					$Day[(localtime($i))[$[+6]],
+					(localtime($i))[$[+2],
+					($i - $LastTimeBase)/3600)))
+			 || ($s .= sprintf("'%d.%d-%d:00' %lf",
+					   (localtime($i))[$[+3,$[+4,$[+2],
+					   ($i - $LastTimeBase)/3600));
+    }
+    $doplot .= "set xtics ($s)\n";
+    
+    chop($xts = &ctime($mintime));
+    chop($xte = &ctime($maxtime));
+    $doplot .= "set xlabel 'Start:  $xts    --   Time Scale   --    End:  $xte'\n";
+    $doplot .= "set yrange [" ;
+    $doplot .= defined($MinY) ? sprintf("%lf", $MinY) : $miny;
+    $doplot .= ':';
+    $doplot .= defined($MaxY) ? sprintf("%lf", $MaxY) : $maxy;
+    $doplot .= "]\n";
+    
+    $doplot .= "   plot";
+    $c = "";
+    $showoffs &&
+	($doplot .= sprintf($fmt,$c,$tmpfile,2,
+			    "offset",
+			    $minoffs,$maxoffs,
+			    "[ms]"),
+	 $c = ",");
+    $LastCmplScale = 1 if ! defined($LastCmplScale);
+    $showcmpl &&
+	($doplot .= sprintf($fmt,$c,$tmpfile,4,
+			    "compliance" .
+			    (&abs($LastCmplScale) > 1
+			     ? " / $LastCmplScale"
+			     : (&abs($LastCmplScale) == 1 ? "" : " * ".(1/$LastCmplScale))),
+			    $mincmpl/$LastCmplScale,$maxcmpl/$LastCmplScale,
+			    ""),
+	 $c = ",");
+    $LastFreqBase = 0 if ! defined($LastFreqBase);
+    $LastFreqBaseString = "?" if ! defined($LastFreqBaseString);
+    $FreqScale = 1 if ! defined($FreqScale);
+    $FreqScaleInv = 1 if ! defined($FreqScaleInv);
+    $showfreq &&
+	($doplot .= sprintf($fmt,$c,$tmpfile,3,
+			    "frequency" .
+			    ($LastFreqBase > 0
+			     ? " - $LastFreqBaseString" 
+			     : ($LastFreqBase == 0 ? "" : " + $LastFreqBaseString")),
+			    $minfreq * $FreqScale - $LastFreqBase,
+			    $maxfreq * $FreqScale - $LastFreqBase,
+			    "[${FreqScaleInv}ppm]"),
+	 $c = ",");
+    $showoreg && $showoffs &&
+	($doplot .= sprintf($regfmt, $c,
+			    &lr_B('offs'),&lr_A('offs'),
+			    "offset   ",
+			    &lr_B('offs'),
+			    ((&lr_A('offs')) < 0 ? '-' : '+'),
+			    &abs(&lr_A('offs')), &lr_r('offs'),
+			    "[ms]"),
+	 $c = ",");
+    $showfreg && $showfreq &&
+	($doplot .= sprintf($regfmt, $c,
+			    &lr_B('freq') * $FreqScale,
+			    (&lr_A('freq') + $minfreq) * $FreqScale - $LastFreqBase,
+			    "frequency",
+			    &lr_B('freq') * $FreqScale,
+			    ((&lr_A('freq') + $minfreq) * $FreqScale - $LastFreqBase) < 0 ? '-' : '+',
+			    &abs((&lr_A('freq') + $minfreq) * $FreqScale - $LastFreqBase),
+			    &lr_r('freq'),
+			    "[${FreqScaleInv}ppm]"),
+	 $c = ",");
+    $doplot .= "\n";
+}
+
+%F_key   = ();
+%F_name  = ();
+%F_size  = ();
+%F_mtime = ();
+%F_first = ();
+%F_last  = ();
+
+sub genfile
+{
+    local($cnt,$in,$out,@fpos) = @_;
+    
+    local(@F,@t,$t,$lastT) = ();
+    local(@break,@time,@offs,@freq,@cmpl,@loffset,@filekey) = ();
+    local($lm,$l,@f);
+    
+    local($sdir,$sname);
+    
+    ;# allocate some storage for the tables
+    ;# otherwise realloc may get into troubles
+    if (defined($StartTime) && defined($EndTime))
+    {
+	$l = ($EndTime-$StartTime) -$[+1 +1; # worst case: 1 sample per second
+    }
+    else
+    {
+	$l = $cnt + 10;
+    }
+    print "preextending arrays to $l entries\n" if $verbose > 2;
+    $#break =   $l; for ($i=$[; $i<=$l;$i++) { $break[$i] = 0; }
+    $#time =    $l; for ($i=$[; $i<=$l;$i++) { $time[$i] = 0; }
+    $#offs =    $l; for ($i=$[; $i<=$l;$i++) { $offs[$i] = 0; }
+    $#freq =    $l; for ($i=$[; $i<=$l;$i++) { $freq[$i] = 0; }
+    $#cmpl =    $l; for ($i=$[; $i<=$l;$i++) { $cmpl[$i] = 0; }
+    $#loffset = $l; for ($i=$[; $i<=$l;$i++) { $loffset[$i] = 0; }
+    $#filekey = $l; for ($i=$[; $i<=$l;$i++) { $filekey[$i] = 0; }
+    ;# now reduce size again
+    $#break =   $[ - 1;
+    $#time =    $[ - 1;
+    $#offs =    $[ - 1;
+    $#freq =    $[ - 1;
+    $#cmpl =    $[ - 1;
+    $#loffset = $[ - 1;
+    $#filekey = $[ - 1;
+    print "memory allocation ready\n" if $verbose > 2;
+    sleep(3) if $verbose > 1;
+
+    $fpos[$[] = '' if !defined($fpos[$[]);
+
+    if (index($in,"/") < $[)
+    {
+	$sdir = ".";
+	$sname = $in;
+    }
+    else
+    {
+	($sdir,$sname) = ($in =~ m!^(.*)/([^/]*)!);
+	$sname = "" unless defined($sname);
+    }
+    
+    $Ltime = -1 if ! defined($Ltime);
+    if (!defined($Lsdir) || $Lsdir ne $sdir || $Ltime != (stat($sdir))[$[+9] ||
+	grep($F_mtime{$_} != (stat($F_name{$_}))[$[+9], @F_files))
+	
+    {
+	print "rescanning directory \"$sdir\" for files \"$sname*\"\n"
+	    if $verbose > 1;
+
+	;# rescan directory on changes
+	$Lsdir = $sdir;
+	$Ltime = (stat($sdir))[$[+9];
+	</X{> if 0;		# dummy line - calm down my formatter
+	local(@newfiles) = < ${in}*[0-9] >;
+	local($st_dev,$st_ino,$st_mtime,$st_size,$name,$key,$modified);
+
+	foreach $name (@newfiles)
+	{
+	    ($st_dev,$st_ino,$st_size,$st_mtime) =
+		(stat($name))[$[,$[+1,$[+7,$[+9];
+	    $modified = 0;
+	    $key = sprintf("%lx|%lu", $st_dev, $st_ino);
+	    
+	    print "candidate file \"$name\"",
+                  (defined($st_dev) ? "" : " failed: $!"),"\n"
+		      if $verbose > 2;
+	    
+	    if (! defined($F_key{$name}) || $F_key{$name} ne $key)
+	    {
+		$F_key{$name} = $key;
+		$modified++;
+	    }
+	    if (!defined($F_name{$key}) || $F_name{$key} ne $name)
+	    {
+		$F_name{$key} = $name;
+		$modified++;
+	    }
+	    if (!defined($F_size{$key}) || $F_size{$key} != $st_size)
+	    {
+		$F_size{$key} = $st_size;
+		$modified++;
+	    }
+	    if (!defined($F_mtime{$key}) || $F_mtime{$key} != $st_mtime)
+	    {
+		$F_mtime{$key} = $st_mtime;
+		$modified++;
+	    }
+	    if ($modified)
+	    {
+		print "new data \"$name\" key: $key;\n" if $verbose > 1;
+	        print "             size: $st_size; mtime: $st_mtime;\n"
+		    if $verbose > 1;
+		$F_last{$key} = $F_first{$key} = $st_mtime;
+		$F_first{$key}--; # prevent zero divide later on
+		;# now compute derivated attributes
+		open(IN, "<$name") ||
+		    do {
+			warn "$0: failed to open \"$name\": $!";
+			next;
+		    };
+
+		while(<IN>)
+		{
+		    @F = split;
+		    next if @F < 5;
+		    next if $F[$[] eq "";
+		    $t = ($F[$[] - $MJD_1970) * 24 * 60 * 60;
+		    $t += $F[$[+1];
+		    $F_first{$key} = $t;
+		    print "\tfound first entry: $t ",&ctime($t)
+			if $verbose > 4;
+		    last;
+		}
+		seek(IN,
+		     ($st_size > 4*$RecordSize) ? $st_size - 4*$RecordSize : 0,
+		     0);
+		while(<IN>)
+		{
+		    @F = split;
+		    next if @F < 5;
+		    next if $F[$[] eq "";
+		    $t = ($F[$[] - $MJD_1970) * 24 * 60 * 60;
+		    $t += $F[$[+1];
+		    $F_last{$key} = $t;
+		    $_ = <IN>;
+		    print "\tfound last entry: $t ", &ctime($t)
+			if $verbose > 4 && ! defined($_);
+		    last unless defined($_);
+		    redo;
+		    ;# Ok, calm down...
+		    ;# using $_ = <IN> in conjunction with redo
+		    ;# is semantically equivalent to the while loop, but
+		    ;# I needed a one line look ahead and this solution
+		    ;# was what I thought of first
+		    ;# and.. If you do not like it dont look
+		}
+		close(IN);
+		print("             first: ",$F_first{$key},
+		      " last: ",$F_last{$key},"\n") if $verbose > 1;
+	    }
+	}
+	;# now reclaim memory used for files no longer referenced ...
+	local(%Names);
+	grep($Names{$_} = 1,@newfiles);
+	foreach (keys %F_key)
+	{
+	    next if defined($Names{$_});
+	    delete $F_key{$_};
+	    $verbose > 2 && print "no longer referenced: \"$_\"\n";
+	}
+	%Names = ();
+	
+	grep($Names{$_} = 1,values(%F_key));
+	foreach (keys %F_name)
+	{
+	    next if defined($Names{$_});
+	    delete $F_name{$_};
+	    $verbose > 2 && print "unref name($_)= $F_name{$_}\n";
+	}
+	foreach (keys %F_size)
+	{
+	    next if defined($Names{$_});
+	    delete $F_size{$_};
+	    $verbose > 2 && print "unref size($_)\n";
+	}
+	foreach (keys %F_mtime)
+	{
+	    next if defined($Names{$_});
+	    delete $F_mtime{$_};
+	    $verbose > 2 && print "unref mtime($_)\n";
+	}
+	foreach (keys %F_first)
+	{
+	    next if defined($Names{$_});
+	    delete $F_first{$_};
+	    $verbose > 2 && print "unref first($_)\n";
+	}
+	foreach (keys %F_last)
+	{
+	    next if defined($Names{$_});
+	    delete $F_last{$_};
+	    $verbose > 2 && print "unref last($_)\n";
+	}
+	;# create list sorted by time
+	@F_files = sort {$F_first{$a} <=> $F_first{$b}; } keys(%F_name);
+	if ($verbose > 1)
+	{
+	    print "Resulting file list:\n";
+	    foreach (@F_files)
+	    {
+		print "\t$_\t$F_name{$_}\n";
+	    }
+	}
+    }
+    
+    printf("processing %s; output \"$out\" (%d input files)\n",
+	   ((defined($StartTime) && defined($EndTime))
+	    ? "time range"
+	    : (defined($StartTime) ? "$cnt samples from StartTime" :
+	      (defined($EndTime) ? "$cnt samples to EndTime" :
+		 "last $cnt samples"))),
+	    scalar(@F_files))
+	if $verbose > 1;
+    
+    ;# open output file - will be input for plotcmd
+    open(OUT,">$out") || 
+	do {
+	    warn("$0: cannot create \"$out\": $!\n");
+	};
+    
+    @f = @F_files;
+    if (defined($StartTime))
+    {
+	while (@f && ($F_last{$f[$[]} < $StartTime))
+	{
+	    print("shifting ", $F_name{$f[$[]},
+		  " last: ", $F_last{$f[$[]},
+		  " < StartTime: $StartTime\n")
+		if $verbose > 3;
+	    shift(@f);
+	}
+
+
+    }
+    if (defined($EndTime))
+    {
+	while (@f && ($F_first{$f[$#f]} > $EndTime))
+	{
+	    print("popping  ", $F_name{$f[$#f]},
+		  " first: ", $F_first{$f[$#f]},
+		  " > EndTime: $EndTime\n")
+		if $verbose > 3;
+	    pop(@f);
+	}
+    }
+    
+    if (@f)
+    {
+	if (defined($StartTime))
+	{
+	    print "guess start according to StartTime ($StartTime)\n"
+		if $verbose > 3;
+
+	    if ($fpos[$[] eq 'start')
+	    {
+		if (grep($_ eq $fpos[$[+1],@f))
+		{
+		    shift(@f) while @f && $f[$[] ne $fpos[$[+1];
+		}
+		else
+		{
+		    @fpos = ('start', $f[$[], undef);
+		}
+	    }
+	    else
+	    {
+		@fpos = ('start' , $f[$[], undef);
+	    }
+	    
+	    if (!defined($fpos[$[+2]))
+	    {
+		if ($StartTime <= $F_first{$f[$[]})
+		{
+		    $fpos[$[+2] = 0;
+		}
+		else
+		{
+		    $fpos[$[+2] =
+			int($F_size{$f[$[]} *
+			    (($StartTime - $F_first{$f[$[]})/
+			     ($F_last{$f[$[]} - $F_first{$f[$[]})));
+		    $fpos[$[+2] = ($fpos[$[+2] <= 2 * $RecordSize)
+			? 0 : $fpos[$[+2] - 2 * $RecordSize;
+		    ;# anyway  as the data may contain "time holes" 
+		    ;# our heuristics may baldly fail
+		    ;# so just start at 0
+		    $fpos[$[+2] = 0;
+		}
+	    }
+	}
+	elsif (defined($EndTime))
+	{
+	    print "guess starting point according to EndTime ($EndTime)\n"
+		if $verbose > 3;
+	    
+	    if ($fpos[$[] eq 'end')
+	    {
+		if (grep($_ eq $fpos[$[+1],@f))
+		{
+		    shift(@f) while @f && $f[$[] ne $fpos[$[+1];
+		}
+		else
+		{
+		    @fpos = ('end', $f[$[], undef);
+		}
+	    }
+	    else
+	    {
+		@fpos = ('end', $f[$[], undef);
+	    }
+	    
+	    if (!defined($fpos[$[+2]))
+	    {
+		local(@x) = reverse(@f);
+		local($s,$c) = (0,$cnt);
+		if ($EndTime < $F_last{$x[$[]})
+		{
+		    ;# last file will only be used partially
+		    $s = int($F_size{$x[$[]} *
+			     (($EndTime - $F_first{$x[$[]}) /
+			      ($F_last{$x[$[]} - $F_first{$x[$[]})));
+		    $s = int($s/$RecordSize);
+		    $c -= $s - 1;
+		    if ($c <= 0)
+		    {
+			;# start is in the same file
+			$fpos[$[+1] = $x[$[];
+			$fpos[$[+2] = ($c >=-2) ? 0 : (-$c - 2) * $RecordSize;
+			shift(@f) while @f && ($f[$[] ne $x[$[]);
+		    }
+		    else
+		    {
+			shift(@x);
+		    }
+		}
+		
+		if (!defined($fpos[$[+2]))
+		{
+		    local($_);
+		    while($_ = shift(@x))
+		    {
+			$s = int($F_size{$_}/$RecordSize);
+			$c -= $s - 1;
+			if ($c <= 0)
+			{
+			    $fpos[$[+1] = $_;
+			    $fpos[$[+2] = ($c>-2) ? 0 : (-$c - 2) * $RecordSize;
+			    shift(@f) while @f && ($f[$[] ne $_);
+			    last;
+			}
+		    }
+		}
+	    }
+	}
+	else
+	{
+	    print "guessing starting point according to count ($cnt)\n"
+		if $verbose > 3;
+	    ;# guess offset to get last available $cnt samples
+	    if ($fpos[$[] eq 'cnt')
+	    {
+		if (grep($_ eq $fpos[$[+1],@f))
+		{
+		    print "old positioning applies\n" if $verbose > 3;
+		    shift(@f) while @f && $f[$[] ne $fpos[$[+1];
+		}
+		else
+		{
+		    @fpos = ('cnt', $f[$[], undef);
+		}
+	    }
+	    else
+	    {
+		@fpos = ('cnt', $f[$[], undef);
+	    }
+	    
+	    if (!defined($fpos[$[+2]))
+	    {
+		local(@x) = reverse(@f);
+		local($s,$c) = (0,$cnt);
+		
+		local($_);
+		while($_ = shift(@x))
+		{
+		    print "examing \"$_\" $c samples still needed\n"
+			if $verbose > 4;
+		    $s = int($F_size{$_}/$RecordSize);
+		    $c -= $s - 1;
+		    if ($c <= 0)
+		    {
+			$fpos[$[+1] = $_;
+			$fpos[$[+2] = ($c>-2) ? 0 : (-$c - 2) * $RecordSize;
+			shift(@f) while @f && ($f[$[] ne $_);
+			last;
+		    }
+		}
+		if (!defined($fpos[$[+2]))
+		{
+		    print "no starting point yet - using start of data\n"
+			if $verbose > 2;
+		    $fpos[$[+2] = 0;
+		}
+	    }
+	}
+    }
+    print "Ooops, no suitable input file ??\n"
+	if $verbose > 1 && @f <= 0;
+
+    printf("Starting at (%s) \"%s\" offset %ld using %d files\n",
+	   $fpos[$[+1],
+	   $F_name{$fpos[$[+1]},
+	   $fpos[$[+2],
+	   scalar(@f))
+	if $verbose > 2;
+
+    $lm = 1;
+    $l = 0;    
+    foreach $key (@f)
+    {
+	$file = $F_name{$key};
+	print "processing file \"$file\"\n" if $verbose > 2;
+	
+	open(IN,"<$file") ||
+	    (warn("$0: cannot read \"$file\": $!\n"), next);
+	
+	;# try to seek to a position nearer to the start of the interesting lines
+	;# should always affect only first item in @f
+	($key eq $fpos[$[+1]) &&
+	    (($verbose > 1) &&
+	     print("Seeking to offset $fpos[$[+2]\n"),
+		seek(IN,$fpos[$[+2],0) ||
+		    warn("$0: seek(\"$F_name{$key}\" failed: $|\n"));
+	
+	while(<IN>)
+	{
+	    $l++;
+	    ($verbose > 3) &&
+		(($l % $lm) == 0 && print("\t$l lines read\n") &&
+		 (($l ==     2) && ($lm =    10) ||
+		  ($l ==   100) && ($lm =   100) ||
+		  ($l ==   500) && ($lm =   500) ||
+		  ($l ==  1000) && ($lm =  1000) ||
+		  ($l ==  5000) && ($lm =  5000) ||
+		  ($l == 10000) && ($lm = 10000)));
+	    
+	    @F = split;
+	    
+	    next if @F < 6;	# no valid input line is this short
+	    next if $F[$[] eq "";
+	    next if ($F[$[] !~ /^\d+$/);
+	    ($F[$[] !~ /^\d+$/) && # A 'never should have happend' error
+		die("$0: unexpected input line: >$_<\n");
+	    
+	    ;# modified Julian to UNIX epoch
+	    $t = ($F[$[] - $MJD_1970) * 24 * 60 * 60;
+	    $t += $F[$[+1];	# add seconds + fraction
+	    
+	    ;# multiply offset by 1000 to get ms - try to avoid float op
+	    (($F[$[+2] =~ s/(\d*)\.(\d{3})(\d*)/$1$2.$3/) &&
+	     $F[$[+2] =~ s/0+([\d\.])/($1 eq '.') ? '0.' : $1/e) # strip leading zeros
+		|| ($F[$[+2] *= 1000);
+
+	    
+	    ;# skip samples out of specified time range
+	    next if (defined($StartTime) && $StartTime > $t);
+	    next if (defined($EndTime) && $EndTime < $t);
+	    
+	    next if defined($lastT) && $t < $lastT; # backward in time ??
+	    
+	    push(@offs,$F[$[+2]);
+	    push(@freq,$F[$[+3] * (2**20/10**6));
+	    push(@cmpl,$F[$[+5]);
+	    
+	    push(@break, (defined($lastT) && ($t - $lastT > $deltaT))); 
+	    $lastT = $t;
+	    push(@time,$t);
+	    push(@loffset, tell(IN) - length($_));
+	    push(@filekey, $key);
+	    
+	    shift(@break),shift(@time),shift(@offs),
+	    shift(@freq), shift(@cmpl),shift(@loffset),
+	    shift(@filekey)
+		if @time > $cnt &&
+		    ! (defined($StartTime) && defined($EndTime));
+
+	    last if @time >= $cnt && defined($StartTime) && !defined($EndTime);
+	}
+	close(IN);
+	last if @time >= $cnt && defined($StartTime) && !defined($EndTime);
+    }
+    print "input scanned ($l lines/",scalar(@time)," samples)\n"
+	if $verbose > 1;
+    
+    &lr_init('offs');
+    &lr_init('freq');
+    
+    if (@time)
+    {
+	local($_,@F);
+	
+	local($timebase) unless defined($timebase);
+	local($freqbase) unless defined($freqbase);
+	local($cmplscale) unless defined($cmplscale);
+	
+	undef $mintime;
+	undef $maxtime;
+	undef $minoffs;
+	undef $maxoffs;
+	undef $minfreq;
+	undef $maxfreq;
+	undef $mincmpl;
+	undef $maxcmpl;
+	undef $miny;
+	undef $maxy ;
+	
+	print "computing ranges\n" if $verbose > 2;
+	
+	$LastCnt = @time;
+
+	;# @time is in ascending order (;-)
+	$mintime = $time[$[];
+	$maxtime = $time[$#time];
+	unless (defined($timebase))
+	{
+	    local($time,@X) = (time);
+	    @X = localtime($time);
+	    
+	    ;# compute today 00:00:00
+	    $timebase = $time - ((($X[$[+2]*60)+$X[$[+1])*60+$X[$[]);
+
+	}
+	$LastTimeBase = $timebase;
+
+	if ($showoffs)
+	{
+	    local($i,$m,$f);
+	    
+	    $minoffs = &min(@offs);
+	    $maxoffs = &max(@offs);
+	    
+	    ;# I know, it is not perl style using indices to access arrays,
+	    ;# but I have to proccess two arrays in sync, non-destructively
+	    ;# (otherwise a (shift(@a1),shift(a2)) would do),
+	    ;# I dont like to make copies of these arrays as they may be huge
+	    $i = $[;
+	    &lr_sample(($time[$i]-$timebase)/3600,$offs[$i],'offs'),$i++
+		while $i <= $#time;
+
+	    ($minoffs == $maxoffs) && ($minoffs -= 0.1,$maxoffs += 0.1);
+
+	    $i = &lr_sigma('offs');
+	    $m = &lr_mean('offs');
+
+	    print "mean offset: $m sigma: $i\n" if $verbose > 2;
+
+	    if (($maxoffs - $minoffs) > $MinClip)
+	    {
+		$f = (&abs($minoffs) < &abs($maxoffs)) ? $FuzzLow : $FuzzBig;
+		$miny = (($m - $minoffs) <= ($f * $i))
+		    ? $minoffs : ($m - $f * $i);
+		$f = ($f == $FuzzLow) ? $FuzzBig : $FuzzLow;
+		$maxy = (($maxoffs - $m) <= ($f * $i))
+		    ? $maxoffs : ($m + $f * $i);
+	    }
+	    else
+	    {
+		$miny = $minoffs;
+		$maxy = $maxoffs;
+	    }
+	    ($maxy-$miny) == 0 &&
+		(($maxy,$miny)
+		 = (($maxoffs - $minoffs) > 0)
+		 ? ($maxoffs,$minoffs) : ($MinClip,-$MinClip));
+
+	    $maxy = $MaxY if defined($MaxY) && $MaxY < $maxy;
+	    $miny = $MinY if defined($MinY) && $MinY > $miny;
+
+	    print  "offset min clipped from $minoffs to $miny\n"
+		if $verbose > 2 && $minoffs != $miny;
+	    print  "offset max clipped from $maxoffs to $maxy\n"
+		if $verbose > 2 && $maxoffs != $maxy;
+	}
+	
+	if ($showfreq)
+	{
+	    local($i,$m);
+	    
+	    $minfreq = &min(@freq);
+	    $maxfreq = &max(@freq);
+	    
+	    $i = $[;
+	    &lr_sample(($time[$i]-$timebase)/3600,$freq[$i]-$minfreq,'freq'),
+	    $i++
+		while $i <= $#time;
+	    
+	    $i = &lr_sigma('freq');
+	    $m = &lr_mean('freq') + $minfreq;
+
+	    print "mean frequency: $m sigma: $i\n" if $verbose > 2;
+
+	    if (defined($maxy))
+	    {
+		local($s) =
+		    ($maxfreq - $minfreq)
+			? ($maxy - $miny) / ($maxfreq - $minfreq) : 1;
+
+		if (defined($freqbase))
+		{
+		    $FreqScale = 1;
+		    $FreqScaleInv = "";
+		}
+		else
+		{
+		    $FreqScale = 1;
+		    $FreqScale = 10 ** int(log($s)/log(10) - 0.9999);
+		    $FreqScaleInv =
+			("$FreqScale" =~ /^10(0*)$/) ? "0.${1}1" : 
+			 ($FreqScale == 1 ? "" : (1/$FreqScale));
+		    
+		    $freqbase = ($maxfreq + $minfreq)/ 2 * $FreqScale; #$m * $FreqScale;
+		    $freqbase -= ($maxy + $miny) / 2; #&lr_mean('offs');
+
+		    ;# round resulting freqbase
+		    ;# to precision of min max difference
+		    $s = -12;
+		    $s = int(log(($maxfreq-$minfreq)*$FreqScale)/log(10))-1
+			unless ($maxfreq-$minfreq) < 1e-12;
+		    $s = 10 ** $s;
+		    $freqbase = int($freqbase / $s) * $s;
+		}
+	    }
+	    else
+	    {
+		$FreqScale = 1;
+		$FreqScaleInv = "";
+		$freqbase = $m unless defined($freqbase);
+		if (($maxfreq - $minfreq) > $MinClip)
+		{
+		    $f = (&abs($minfreq) < &abs($maxfreq))
+			? $FuzzLow : $FuzzBig;
+		    $miny = (($freqbase - $minfreq) <= ($f * $i))
+			? ($minfreq-$freqbase) : (- $f * $i);
+		    $f = ($f == $FuzzLow) ? $FuzzBig : $FuzzLow;
+		    $maxy = (($maxfreq - $freqbase) <= ($f * $i))
+			? ($maxfreq-$freqbase) : ($f * $i);
+		}
+		else
+		{
+		    $miny = $minfreq - $freqbase;
+		    $maxy = $maxfreq - $freqbase;
+		}
+		($maxy - $miny) == 0 &&
+		    (($maxy,$miny) =
+		     (($maxfreq - $minfreq) > 0)
+		     ? ($maxfreq-$freqbase,$minfreq-$freqbase) : (0.5,-0.5));
+		
+		$maxy = $MaxY if defined($MaxY) && $MaxY < $maxy;
+		$miny = $MinY if defined($MinY) && $MinY > $miny;
+
+		print("frequency min clipped from ",$minfreq-$freqbase,
+		      " to $miny\n")
+		    if $verbose > 2 && $miny != ($minfreq - $freqbase);
+		print("frequency max clipped from ",$maxfreq-$freqbase,
+		      " to $maxy\n")
+		    if $verbose > 2 && $maxy != ($maxfreq - $freqbase);
+	    }
+	    $LastFreqBaseString =
+		sprintf("%g",$freqbase >= 0 ? $freqbase : -$freqbase);
+	    $LastFreqBase = $freqbase;
+	    print "LastFreqBaseString now \"$LastFreqBaseString\"\n"
+		if $verbose > 5;
+	}
+	else
+	{
+	    $FreqScale = 1;
+	    $FreqScaleInv = "";
+	    $LastFreqBase = 0;
+	    $LastFreqBaseString = "";
+	}
+		
+	if ($showcmpl)
+	{
+	    $mincmpl = &min(@cmpl);
+	    $maxcmpl = &max(@cmpl);
+
+	    if (!defined($cmplscale))
+	    {
+		if (defined($maxy))
+		{
+		    local($cmp)
+			= (&abs($miny) > &abs($maxy)) ? &abs($miny) : $maxy;
+		    $cmplscale = $cmp == $maxy ? 1 : -1;
+
+		    foreach (0.01, 0.02, 0.05,
+			     0.1, 0.2, 0.25, 0.4, 0.5,
+			     1, 2, 4, 5,
+			     10, 20, 25, 50,
+			     100, 200, 250, 500, 1000)
+		    {
+			$cmplscale *= $_, last if $maxcmpl/$_ <= $cmp;
+		    }
+		}
+		else
+		{
+		    $cmplscale = 1;
+		    $miny = $mincmpl ? 0 : -$MinClip;
+		    $maxy = $maxcmpl+$MinClip;
+		}
+	    }
+	    $LastCmplScale = $cmplscale;
+	}
+	else
+	{
+	    $LastCmplScale = 1;
+	}
+	
+	print "creating plot command input file\n" if $verbose > 2;
+	
+	
+	print OUT ("# preprocessed NTP statistics file for $STATHOST\n");
+	print OUT ("#    timebase is: ",&ctime($LastTimeBase))
+	    if defined($LastTimeBase);
+	print OUT ("#    frequency is offset by  ",
+		   ($LastFreqBase >= 0 ? "+" : "-"),
+		   "$LastFreqBaseString [${FreqScaleInv}ppm]\n");
+	print OUT ("#    compliance is scaled by $LastCmplScale\n");
+	print OUT ("# time [h]\toffset [ms]\tfrequency [${FreqScaleInv}ppm]\tcompliance\n");
+	
+	printf OUT ("%s%lf\t%lf\t%lf\t%lf\n",
+		    (shift(@break) ? "\n" : ""),
+		    (shift(@time) - $LastTimeBase)/3600,
+		    shift(@offs),
+		    shift(@freq) * $FreqScale - $LastFreqBase,
+		    shift(@cmpl) / $LastCmplScale)
+	    while(@time);
+    }
+    else
+    {
+	;# prevent plotcmd from processing empty file
+	print "Creating plot command dummy...\n" if $verbose > 2;
+	print OUT "# dummy samples\n0 1 2 3\n1 1 2 3\n";
+	&lr_sample(0,1,'offs');
+	&lr_sample(1,1,'offs');
+	&lr_sample(0,2,'freq');
+	&lr_sample(1,2,'freq');
+	@time = (0, 1); $maxtime = 1; $mintime = 0;
+	@offs = (1, 1); $maxoffs = 1; $minoffs = 1;
+	@freq = (2, 2); $maxfreq = 2; $minfreq = 2;
+	@cmpl = (3, 3); $maxcmpl = 3; $mincmpl = 3;
+	$LastCnt = 2;
+	$LastFreqBase = 0;
+	$LastCmplScale = 1;
+	$LastTimeBase = 0;
+	$miny = -$MinClip;
+	$maxy = 3 + $MinClip;
+    }
+    close(OUT);
+    
+    print "plot command input file created\n"
+	if $verbose > 2;
+	
+	
+    if (($fpos[$[] eq 'cnt' && scalar(@loffset) >= $cnt) ||
+	($fpos[$[] eq 'start' && $mintime <= $StartTime) ||
+	($fpos[$[] eq 'end'))
+    {
+	return ($fpos[$[],$filekey[$[],$loffset[$[]);
+    }
+    else			# found to few lines - next time start search earlier in file
+    {
+	if ($fpos[$[] eq 'start')
+	{
+	    ;# the timestamps we got for F_first and F_last guaranteed
+	    ;# that no file is left out
+	    ;# the only thing that could happen is:
+	    ;# we guessed the starting point wrong
+	    ;# compute a new guess from the first record found
+	    ;# if this equals our last guess use data of first record
+	    ;# otherwise try new guess
+	    
+	    if ($fpos[$[+1] eq $filekey[$[] && $loffset[$[] > $fpos[$[+2])
+	    {
+		local($noff);
+		$noff = $loffset[$[] - ($cnt - @loffset + 1) * $RecordSize;
+		$noff = 0 if $noff < 0;
+		
+		return (@fpos[$[,$[+1], ($noff == $fpos[$[+2]) ? $loffset[$[] : $noff);
+	    }
+	    return ($fpos[$[],$filekey[$[],$loffset[$[]);
+	}
+	elsif ($fpos[$[] eq 'end' || $fpos[$[] eq 'cnt')
+	{
+	    ;# try to start earlier in file
+	    ;# if we already started at the beginning
+	    ;# try to use previous file
+	    ;# this assumes distance to better starting point is at most one file
+	    ;# the primary guess at top of genfile() should usually allow this
+	    ;# assumption
+	    ;# if the offset of the first sample used is within 
+	    ;# a different file than we guessed it must have occurred later
+	    ;# in the sequence of files
+	    ;# this only can happen if our starting file did not contain
+	    ;# a valid sample from the starting point we guessed
+	    ;# however this does not invalidate our assumption, no check needed
+	    local($noff,$key);
+	    if ($fpos[$[+2] > 0)
+	    {
+		$noff = $fpos[$[+2] - $RecordSize * ($cnt - @loffset + 1);
+		$noff = 0 if $noff < 0;
+		return (@fpos[$[,$[+1],$noff);
+	    }
+	    else
+	    {
+		if ($fpos[$[+1] eq $F_files[$[])
+		{
+		    ;# first file - and not enough samples
+		    ;# use data of first sample
+		    return ($fpos[$[], $filekey[$[], $loffset[$[]);
+		}
+		else
+		{
+		    ;# search key of previous file
+		    $key = $F_files[$[];
+		    @F = reverse(@F_files);
+		    while ($_ = shift(@F))
+		    {
+			if ($_ eq $fpos[$[+1])
+			{
+			    $key = shift(@F) if @F;
+			    last;
+			}
+		    }
+		    $noff = int($F_size{$key} / $RecordSize);
+		    $noff -= $cnt - @loffset;
+		    $noff = 0 if $noff < 0;
+		    $noff *= $RecordSize;
+		    return ($fpos[$[], $key, $noff);
+		}
+	    }
+	}
+	else
+	{
+	    return ();
+	}
+	
+	return 0 if @loffset <= 1 || ($loffset[$#loffset] - $loffset[$[]) <= 1;
+	
+	;# EOF - 1.1 * avg(line) * $cnt
+	local($val) =  $loffset[$#loffset]
+	    - $cnt * 11 * (($loffset[$#loffset] - $loffset[$[]) / @loffset) / 10;
+	return ($val < 0) ? 0 : $val;
+    }
+}
+
+$Ltime = -1 if ! defined($Ltime);
+$LastFreqBase = 0;
+$LastFreqBaseString = "??";
+
+;# initial setup of plot
+print "initialize plotting\n" if $verbose;
+if (defined($PrintIt))
+{
+  if ($PrintIt =~ m,/,)
+  {
+    print "Saving plot to file $PrintIt\n";
+    print PLOT "set output '$PrintIt'\n";
+  }
+  else
+  {
+    print "Printing plot on printer $PrintIt\n";
+    print PLOT "set output '| lpr -P$PrintIt -h'\n";
+  }
+  print PLOT "set terminal postscript landscape color solid 'Helvetica' 10\n";
+}
+print PLOT "set grid\n";
+print PLOT "set tics out\n";
+print PLOT "set format y '%g '\n";
+printf PLOT "set time 47\n" unless defined($PrintIt);
+
+@filepos =();
+while(1)
+{
+  print &ctime(time) if $verbose;
+
+  ;# update diplay characteristics
+  &read_config;# unless defined($PrintIt);
+
+  unlink($tmpfile);
+  @filepos = &genfile($samples,$srcprefix,$tmpfile,@filepos);
+
+  ;# make plotcmd display samples
+  &make_doplot;
+  print "Displaying plot...\n" if $verbose > 1;
+  print "command for plot sub process:\n$doplot----\n" if $verbose > 3;
+  print PLOT $doplot;
+}
+continue
+{
+  if (defined($PrintIt))
+  {
+    delete $SIG{'CHLD'};
+    print PLOT "quit\n";
+    close(PLOT);
+    if ($PrintIt =~ m,/,)
+    {
+      print "Plot saved to file $PrintIt\n";
+    }
+    else
+    {
+      print "Plot spooled to printer $PrintIt\n";
+    }
+    unlink($tmpfile);
+    exit(0);
+  }
+  ;# wait $delay seconds
+  print "waiting $delay seconds ..." if $verbose > 2;
+  sleep($delay);
+  print " continuing\n" if $verbose > 2;
+  undef($LastFreqBaseString);
+}
+
+
+sub date_time_spec2seconds
+{
+    local($_) = @_;
+    ;# a date_time_spec consistes of:
+    ;#  YYYY-MM-DD_HH:MM:SS.ms
+    ;# values can be omitted from the beginning and default than to
+    ;# values of current date
+    ;# values omitted from the end default to lowest possible values
+
+    local($time) = time;
+    local($sec,$min,$hour,$mday,$mon,$year)
+	= localtime($time);
+
+    local($last) = ();
+
+    s/^\D*(.*\d)\D*/$1/;	# strip off garbage
+
+  PARSE:
+    {
+	if (s/^(\d{4})(-|$)//)
+	{
+	    if ($1 < 1970)
+	    {
+		warn("$0: can not handle years before 1970 - year $1 ignored\n");
+		return undef;
+	    }
+	    elsif ( $1 >= 2070)
+	    {
+		warn("$0: can not handle years past 2070 - year $1 ignored\n");
+		return undef;
+	    }
+	    else
+	    {
+		$year = $1 % 100; # 0<= $year < 100
+				 ;# - interpreted 70 .. 99,00 .. 69
+	    }
+	    $last = $[ + 5;
+	    last PARSE if $_ eq '';
+	    warn("$0: bad date_time_spec: \"$_\" found after YEAR\n"),
+	    return(undef)
+		if $2 eq '';
+	}
+
+	if (s/^(\d{1,2})(-|$)//)
+	{
+	    warn("$0: implausible month $1\n"),return(undef)
+		if $1 < 1 || $1 > 12;
+	    $mon = $1 - 1;
+	    $last = $[ + 4;
+	    last PARSE if $_ eq '';
+	    warn("$0: bad date_time_spec: \"$_\" found after MONTH\n"),
+	    return(undef)
+		if $2 eq '';
+	}
+	else
+	{
+	    warn("$0: bad date_time_spec \"$_\"\n"),return(undef)
+		if defined($last);
+	    
+	}
+
+	if (s/^(\d{1,2})([_ ]|$)//)
+	{
+	    warn("$0: implausible month day $1 for month ".($mon+1)." (".
+		 $MaxNumDaysPerMonth[$mon].")$mon\n"),
+	    return(undef)
+		if $1 < 1 || $1 > $MaxNumDaysPerMonth[$mon];
+	    $mday = $1;
+	    $last = $[ + 3;
+	    last PARSE if $_ eq '';
+	    warn("$0: bad date_time_spec \"$_\" found after MDAY\n"),
+	    return(undef)
+		if $2 eq '';
+	}
+	else
+	{
+	    warn("$0: bad date_time_spec \"$_\"\n"), return undef
+		if defined($last);
+	}
+
+	;# now we face a problem:
+ 	;# if ! defined($last) a prefix of "07:"
+	;# can be either 07:MM or 07:ss
+	;# to get the second interpretation make the user add
+ 	;# a msec fraction part and check for this special case
+	if (! defined($last) && s/^(\d{1,2}):(\d{1,2}\.\d+)//)
+	{
+	    warn("$0: implausible minute $1\n"), return undef
+		if $1 < 0 || $1 >= 60;
+	    warn("$0: implausible second $1\n"), return undef
+		if $2 < 0 || $2 >= 60;
+	    $min = $1;
+	    $sec = $2;
+	    $last = $[ + 1;
+	    last PARSE if $_ eq '';
+	    warn("$0: bad date_time_spec \"$_\" after SECONDS\n");
+	    return undef;
+	}
+	
+	if (s/^(\d{1,2})(:|$)//)
+	{
+	    warn("$0: implausible hour $1\n"), return undef
+		if $1 < 0 || $1 > 24;
+	    $hour = $1;
+	    $last = $[ + 2;
+	    last PARSE if $_ eq '';
+	    warn("$0: bad date_time_spec found \"$_\" after HOUR\n"),
+	    return undef
+		if $2 eq '';
+	}
+	else
+	{
+	    warn("$0: bad date_time_spec \"$_\"\n"), return undef
+		if defined($last);
+	}
+
+	if (s/^(\d{1,2})(:|$)//)
+	{
+	    warn("$0: implausible minute $1\n"), return undef
+		if $1 < 0 || $1 >=60;
+	    $min = $1;
+	    $last = $[ + 1;
+	    last PARSE if $_ eq '';
+	    warn("$0: bad date_time_spec found \"$_\" after MINUTE\n"),
+	    return undef
+		if $2 eq '';
+	}
+	else
+	{
+	    warn("$0: bad date_time_spec \"$_\"\n"), return undef
+		if defined($last);
+	}
+
+	if (s/^(\d{1,2}(\.\d+)?)//)
+	{
+	    warn("$0: implausible second $1\n"), return undef
+		if $1 < 0 || $1 >=60;
+	    $sec = $1;
+	    $last = $[;
+	    last PARSE if $_ eq '';
+	    warn("$0: bad date_time_spec found \"$_\" after SECOND\n");
+	    return undef;
+	}
+    }
+
+    return $time unless defined($last);
+
+    $sec  = 0 if $last > $[;
+    $min  = 0 if $last > $[ + 1;
+    $hour = 0 if $last > $[ + 2;
+    $mday = 1 if $last > $[ + 3;
+    $mon  = 0 if $last > $[ + 4;
+    local($rtime) = &timelocal($sec,$min,$hour,$mday,$mon,$year, 0,0, 0);
+
+    ;# $rtime may be off if daylight savings time is in effect at given date
+    return $rtime + ($sec - int($sec))
+	if $hour == (localtime($rtime))[$[+2];
+    return
+	&timelocal($sec,$min,$hour,$mday,$mon,$year, 0,0, 1)
+	    + ($sec - int($sec));
+}
+
+
+sub min
+{
+  local($m) = shift;
+
+  grep((($m > $_) && ($m = $_),0),@_);
+  $m;
+}
+
+sub max
+{
+  local($m) = shift;
+
+  grep((($m < $_) && ($m = $_),0),@_);
+  $m;
+}
diff --git a/scripts/monitoring/ntptrap b/scripts/monitoring/ntptrap
new file mode 100644
index 0000000..5a1bcb1
--- /dev/null
+++ b/scripts/monitoring/ntptrap
@@ -0,0 +1,463 @@
+#!/local/bin/perl --*-perl-*-
+;#
+;# ntptrap,v 3.1 1993/07/06 01:09:15 jbj Exp
+;#
+;# a client for the xntp mode 6 trap mechanism
+;#
+;# Copyright (c) 1992 
+;#  Rainer Pruy Friedrich-Alexander Universitaet Erlangen-Nuernberg
+;#
+;#
+;#############################################################
+$0 =~ s!^.*/([^/]+)$!$1!;		# strip to filename
+;# enforce STDOUT and STDERR to be line buffered
+$| = 1;
+select((select(STDERR),$|=1)[$[]);
+
+;#######################################
+;# load utility routines and definitions
+;#
+require('ntp.pl');			# implementation of the NTP protocol
+use Socket;
+
+#eval { require('sys/socket.ph'); require('netinet/in.ph') unless defined(&INADDR_ANY); } ||
+#do {
+  #die("$0: $@") unless $[ == index($@, "Can't locate ");
+  #warn "$0: $@";
+  #warn "$0: supplying some default definitions\n";
+  #eval 'sub INADDR_ANY { 0; } sub AF_INET {2;} sub SOCK_DGRAM {2;} 1;' || die "$0: $@";
+#};
+require('getopts.pl');			# option parsing
+require('ctime.pl');			# date/time formatting
+
+;######################################
+;# define some global constants
+;#
+$BASE_TIMEOUT=10;
+$FRAG_TIMEOUT=10;
+$MAX_TRY = 5;
+$REFRESH_TIME=60*15;		# 15 minutes (server uses 1 hour)
+$ntp'timeout = $FRAG_TIMEOUT; #';
+$ntp'timeout if 0;
+
+;######################################
+;# now process options
+;#
+sub usage
+{
+    die("usage: $0 [-n] [-p <port>] [-l <logfile>] [host] ...\n");
+}
+
+$opt_l = "/dev/null";	# where to write debug messages to
+$opt_p = 0;		# port to use locally - (0 does mean: will be choosen by kernel)
+
+&usage unless &Getopts('l:p:');
+&Getopts if 0;	# make -w happy
+
+@Hosts = ($#ARGV < $[) ? ("localhost") : @ARGV;
+
+;# setup for debug output
+$DEBUGFILE=$opt_l;
+$DEBUGFILE="&STDERR" if $DEBUGFILE eq '-';
+
+open(DEBUG,">>$DEBUGFILE") || die("Cannot open \"$DEBUGFILE\": $!\n");
+select((select(DEBUG),$|=1)[$[]);
+
+;# &log prints a single trap record (adding a (local) time stamp)
+sub log
+{
+    chop($date=&ctime(time));
+    print "$date ",@_,"\n";
+}
+
+sub debug
+{
+    print DEBUG @_,"\n";
+}
+;# 
+$proto_udp = (getprotobyname('udp'))[$[+2] ||
+		(warn("$0: Could not get protocoll number for 'udp' using 17"), 17);
+
+$ntp_port = (getservbyname('ntp','udp'))[$[+2] ||
+	      (warn("$0: Could not get port number for service ntp/udp using 123"), 123);
+
+;# 
+socket(S, &AF_INET, &SOCK_DGRAM, $proto_udp) || die("Cannot open socket: $!\n");
+
+;# 
+bind(S, pack("S n a4 x8", &AF_INET, $opt_p, &INADDR_ANY)) ||
+    die("Cannot bind: $!\n");
+
+($my_port, $my_addr) = (unpack("S n a4 x8",getsockname(S)))[$[+1,$[+2];
+&log(sprintf("Listening at address %d.%d.%d.%d port %d",
+	     unpack("C4",$my_addr), $my_port));
+
+;# disregister with all servers in case of termination
+sub cleanup
+{
+    &log("Aborted by signal \"$_[$[]\"") if defined($_[$[]);
+
+    foreach (@Hosts)
+    {
+	if ( ! defined($Host{$_}) )
+	{
+		print "no info for host '$_'\n";
+		next;
+	}
+	&ntp'send(S,31,0,"",pack("Sna4x8",&AF_INET,$ntp_port,$Host{$_})); #';
+    }
+    close(S);
+    exit(2);
+}
+
+$SIG{'HUP'} = 'cleanup';
+$SIG{'INT'} = 'cleanup';
+$SIG{'QUIT'} = 'cleanup';
+$SIG{'TERM'} = 'cleanup';
+
+0 && $a && $b;
+sub timeouts			# sort timeout id array
+{
+    $TIMEOUTS{$a} <=> $TIMEOUTS{$b};
+}
+
+;# a Request element looks like: pack("a4SC",addr,associd,op)
+@Requests= ();
+
+;# compute requests for set trap control msgs to each host given
+{
+    local($name,$addr);
+    
+    foreach (@Hosts)
+    {
+	if (/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/)
+	{
+	    ($name,$addr) =
+		(gethostbyaddr(pack("C4",$1,$2,$3,$4),&AF_INET))[$[,$[+4];
+	    unless (defined($name))
+	    {
+		$name = sprintf("[[%d.%d.%d.%d]]",$1,$2,$3,$4);
+		$addr = pack("C4",$1,$2,$3,$4);
+	    }
+	}
+	else
+	{
+	    ($name,$addr) = (gethostbyname($_))[$[,$[+4];
+	    unless (defined($name))
+	    {
+		warn "$0: unknown host \"$_\" - ignored\n";
+		next;
+	    }
+	}
+	next if defined($Host{$name});
+	$Host{$name} = $addr;
+	$Host{$_} = $addr;
+	push(@Requests,pack("a4SC",$addr,0,6));	# schedule a set trap request for $name
+    }
+}
+
+sub hostname
+{
+    local($addr) = @_;
+    return $HostName{$addr} if defined($HostName{$addr});
+    local($name) = gethostbyaddr($addr,&AF_INET);
+    &debug(sprintf("hostname(%d.%d.%d.%d) = \"%s\"",unpack("C4",$addr),$name))
+	if defined($name);
+    defined($name) && ($HostName{$addr} = $name) && (return $name);
+    &debug(sprintf("Failed to get name for %d.%d.%d.%d",unpack("C4",$addr)));
+    return sprintf("[%d.%d.%d.%d]",unpack("C4",$addr));
+}
+
+;# when no hosts were given on the commandline no requests have been scheduled
+&usage unless (@Requests);
+
+&debug(sprintf("%d request(s) scheduled",scalar(@Requests)));
+grep(&debug("    - ".$_),keys(%Host));
+
+;# allocate variables;
+$addr="";
+$assoc=0;
+$op = 0;
+$timeout = 0;
+$ret="";
+%TIMEOUTS = ();
+%TIMEOUT_PROCS = ();
+@TIMEOUTS = ();		
+
+$len = 512;
+$buf = " " x $len;
+
+while (1)
+{
+    if (@Requests || @TIMEOUTS)		# if there is some work pending
+    {
+	if (@Requests)
+	{
+	    ($addr,$assoc,$op) = unpack("a4SC",($req = shift(@Requests)));
+	    &debug(sprintf("Request: %s: %s(%d)",&hostname($addr), &ntp'cntrlop_name($op), $assoc)); #';))
+	    $ret = &ntp'send(S,$op,$assoc,"", #'(
+                             pack("Sna4x8",&AF_INET,$ntp_port,$addr));
+	    &set_timeout("retry-".unpack("H*",$req),time+$BASE_TIMEOUT,
+			 sprintf("&retry(\"%s\");",unpack("H*",$req)));
+
+	    last unless (defined($ret)); # warn called by ntp'send();
+
+	    ;# if there are more requests just have a quick look for new messages
+	    ;# otherwise grant server time for a response
+	    $timeout = @Requests ? 0 : $BASE_TIMEOUT;
+	}
+	if ($timeout && @TIMEOUTS)
+	{
+	    ;# ensure not to miss a timeout
+	    if ($timeout + time > $TIMEOUTS{$TIMEOUTS[$[]})
+	    {
+		$timeout = $TIMEOUTS{$TIMEOUTS[$[]} - time;
+		$timeout = 0 if $timeout < 0;
+	    }
+	}
+    }
+    else
+    {
+	;# no work yet - wait for some messages dropping in
+	;# usually this will not hapen as the refresh semantic will
+	;# always have a pending timeout
+	undef($timeout);
+    }
+
+    vec($mask="",fileno(S),1) = 1;
+    $ret = select($mask,undef,undef,$timeout);
+
+    warn("$0: select: $!\n"),last if $ret < 0;	# give up on error return from select
+
+    if ($ret == 0)
+    {
+	;# timeout
+	if (@TIMEOUTS && time > $TIMEOUTS{$TIMEOUTS[$[]})
+	{
+	    ;# handle timeout
+	    $timeout_proc =
+		(delete $TIMEOUT_PROCS{$TIMEOUTS[$[]},
+		 delete $TIMEOUTS{shift(@TIMEOUTS)})[$[];
+	    eval $timeout_proc;
+	    die "timeout eval (\"$timeout_proc\"): $@\n" if $@;
+	}
+	;# else: there may be something to be sent
+    }
+    else
+    {
+	;# data avail
+	$from = recv(S,$buf,$len,0);
+	;# give up on error return from recv
+	warn("$0: recv: $!\n"), last unless (defined($from));
+
+	$from = (unpack("Sna4",$from))[$[+2]; # keep host addr only
+	;# could check for ntp_port - but who cares
+	&debug("-Packet from ",&hostname($from));
+
+	;# stuff packet into ntp mode 6 receive machinery
+	($ret,$data,$status,$associd,$op,$seq,$auth_keyid) =
+	    &ntp'handle_packet($buf,$from); # ';
+	&debug(sprintf("%s uses auth_keyid %d",&hostname($from),$auth_keyid)) if defined($auth_keyid);
+	next unless defined($ret);
+
+	if ($ret eq "")
+	{
+	    ;# handle packet
+	    ;# simple trap response messages have neither timeout nor retries
+	    &clear_timeout("retry-".unpack("H*",pack("a4SC",$from,$associd,$op))) unless $op == 7;
+	    delete $RETRY{pack("a4SC",$from,$associd,$op)} unless $op == 7;
+
+	    &process_response($from,$ret,$data,$status,$associd,$op,$seq,$auth_keyid);
+	}
+	else
+	{
+	    ;# some kind of error
+	    &log(sprintf("%50s: %s: %s",(gethostbyaddr($from,&AF_INET))[$[],$ret,$data));
+	    if ($ret ne "TIMEOUT" && $ret ne "ERROR")
+	    {
+		&clear_timeout("retry-".unpack("H*",pack("a4SC",$from,$associd,$op)));
+	    }
+	}
+    }
+    
+}
+
+warn("$0: terminating\n");
+&cleanup;
+exit 0;
+
+;##################################################
+;# timeout support
+;#
+sub set_timeout
+{
+    local($id,$time,$proc) = @_;
+    
+    $TIMEOUTS{$id} = $time;
+    $TIMEOUT_PROCS{$id} = $proc;
+    @TIMEOUTS = sort timeouts keys(%TIMEOUTS);
+    chop($date=&ctime($time));
+    &debug(sprintf("Schedule timeout \"%s\" for %s", $id, $date));
+}
+
+sub clear_timeout
+{
+    local($id) = @_;
+    delete $TIMEOUTS{$id};
+    delete $TIMEOUT_PROCS{$id};
+    @TIMEOUTS = sort timeouts keys(%TIMEOUTS);
+    &debug("Clear  timeout \"$id\"");
+}
+
+0 && &refresh;
+sub refresh
+{
+    local($addr) = @_[$[];
+    $addr = pack("H*",$addr);
+    &debug(sprintf("Refreshing trap for %s", &hostname($addr)));
+    push(@Requests,pack("a4SC",$addr,0,6));
+}
+
+0 && &retry;
+sub retry
+{
+    local($tag) = @_;
+    $tag = pack("H*",$tag);
+    $RETRY{$tag} = 0 if (!defined($RETRY{$tag}));
+
+    if (++$RETRY{$tag} > $MAX_TRY)
+    {
+	&debug(sprintf("Retry failed: %s assoc %5d op %d",
+		       &hostname(substr($tag,$[,4)),
+		       unpack("x4SC",$tag)));
+	return;
+    }
+    &debug(sprintf("Retrying: %s assoc %5d op %d",
+		       &hostname(substr($tag,$[,4)),
+		       unpack("x4SC",$tag)));
+    push(@Requests,$tag);
+}
+
+sub process_response
+{
+    local($from,$ret,$data,$status,$associd,$op,$seq,$auth_keyid) = @_;
+    
+    $msg="";
+    if ($op == 7)		# trap response
+    {
+	$msg .= sprintf("%40s trap#%-5d",
+			&hostname($from),$seq);
+	&debug (sprintf("\nTrap %d associd %d:\n%s\n===============\n",$seq,$associd,$data));
+	if ($associd == 0)	# system event
+	{
+	    $msg .= "  SYSTEM   ";
+	    $evnt = &ntp'SystemEvent($status); #';
+	    $msg .= "$evnt ";
+	    ;# for special cases add additional info
+	    ($stratum) = ($data =~ /stratum=(\d+)/);
+	    ($refid) = ($data =~ /refid=([\w\.]+)/);
+	    $msg .= "stratum=$stratum refid=$refid";
+	    if ($refid =~ /\[?(\d+)\.(\d+)\.(\d+)\.(\d+)/)
+	    {
+		local($x) = (gethostbyaddr(pack("C4",$1,$2,$3,$4),&AF_INET));
+		$msg .= " " . $x if defined($x)
+	    }
+	    if ($evnt eq "event_sync_chg")
+	    {
+		$msg .= sprintf("%s %s ",
+				&ntp'LI($status), #',
+				&ntp'ClockSource($status) #'
+				);
+	    }
+	    elsif ($evnt eq "event_sync/strat_chg")
+	    {
+		($peer) = ($data =~ /peer=([0-9]+)/);
+		$msg .= " peer=$peer";
+	    }
+	    elsif ($evnt eq "event_clock_excptn")
+	    {
+		if (($device) = ($data =~ /device=\"([^\"]+)\"/))
+		{
+		    ($cstatus) = ($data =~ /refclockstatus=0?x?([\da-fA-F]+)/);
+		    $Cstatus = hex($cstatus);
+		    $msg .= sprintf("- %-32s",&ntp'clock_status($Cstatus)); #');
+		    ($timecode) = ($data =~ /timecode=\"([^\"]+)\"/);
+		    $msg .= " \"$device\" \"$timecode\"";
+		}
+		else
+		{
+		    push(@Requests,pack("a4SC",$from, $associd, 4));
+		}
+	    }
+	}
+	else			# peer event
+	{
+	    $msg .= sprintf("peer %5d ",$associd);
+	    ($srcadr) = ($data =~ /srcadr=\[?([\d\.]+)/);
+	    $msg .= sprintf("%-18s %40s ", "[$srcadr]",
+			    &hostname(pack("C4",split(/\./,$srcadr))));
+	    $evnt = &ntp'PeerEvent($status); #';
+	    $msg .= "$evnt ";
+	    ;# for special cases include additional info
+	    if ($evnt eq "event_clock_excptn")
+	    {
+		if (($device) = ($data =~ /device=\"([^\"]+)\"/))
+		{
+		    ;#&debug("----\n$data\n====\n");
+		    ($cstatus) = ($data =~ /refclockstatus=0?x?([\da-fA-F]+)/);
+		    $Cstatus = hex($cstatus);
+		    $msg .= sprintf("- %-32s",&ntp'clock_status($Cstatus)); #');
+		    ($timecode) = ($data =~ /timecode=\"([^\"]+)\"/);
+		    $msg .= " \"$device\" \"$timecode\"";
+		}
+		else
+		{
+		    ;# no clockvars included - post a cv request
+		    push(@Requests,pack("a4SC",$from, $associd, 4));
+		}
+	    }
+	    elsif ($evnt eq "event_stratum_chg")
+	    {
+		($stratum) = ($data =~ /stratum=(\d+)/);
+		$msg .= "new stratum $stratum";
+	    }
+	}
+    }
+    elsif ($op == 6)		# set trap resonse
+    {
+	&debug("Set trap ok from ",&hostname($from));
+	&set_timeout("refresh-".unpack("H*",$from),time+$REFRESH_TIME,
+		     sprintf("&refresh(\"%s\");",unpack("H*",$from)));
+	return;
+    }
+    elsif ($op == 4)		# read clock variables response
+    {
+	;# status of clock
+	$msg .= sprintf(" %40s ", &hostname($from));
+	if ($associd == 0)
+	{
+	    $msg .= "system clock status: ";
+	}
+	else
+	{
+	    $msg .= sprintf("peer %5d clock",$associd);
+	}
+	$msg .= sprintf("%-32s",&ntp'clock_status($status)); #');
+	($device) = ($data =~ /device=\"([^\"]+)\"/);
+	($timecode) = ($data =~ /timecode=\"([^\"]+)\"/);
+	$msg .= " \"$device\" \"$timecode\"";
+    }
+    elsif ($op == 31)		# unset trap response (UNOFFICIAL op)
+    {
+	;# clear timeout
+	&debug("Clear Trap ok from ",&hostname($from));
+	&clear_timeout("refresh-".unpack("H*",$from));
+	return;
+    }
+    else			# unexpected response
+    {
+	$msg .= "unexpected response to op $op assoc=$associd";
+	$msg .= sprintf(" status=%04x",$status);
+    }
+    &log($msg);
+}
diff --git a/scripts/monitoring/timelocal.pl b/scripts/monitoring/timelocal.pl
new file mode 100644
index 0000000..d0f73a2
--- /dev/null
+++ b/scripts/monitoring/timelocal.pl
@@ -0,0 +1,77 @@
+;# timelocal.pl
+;#
+;# Usage:
+;#	$time = timelocal($sec,$min,$hours,$mday,$mon,$year,$junk,$junk,$isdst);
+;#	$time = timegm($sec,$min,$hours,$mday,$mon,$year);
+
+;# These routines are quite efficient and yet are always guaranteed to agree
+;# with localtime() and gmtime().  We manage this by caching the start times
+;# of any months we've seen before.  If we know the start time of the month,
+;# we can always calculate any time within the month.  The start times
+;# themselves are guessed by successive approximation starting at the
+;# current time, since most dates seen in practice are close to the
+;# current date.  Unlike algorithms that do a binary search (calling gmtime
+;# once for each bit of the time value, resulting in 32 calls), this algorithm
+;# calls it at most 6 times, and usually only once or twice.  If you hit
+;# the month cache, of course, it doesn't call it at all.
+
+;# timelocal is implemented using the same cache.  We just assume that we're
+;# translating a GMT time, and then fudge it when we're done for the timezone
+;# and daylight savings arguments.  The timezone is determined by examining
+;# the result of localtime(0) when the package is initialized.  The daylight
+;# savings offset is currently assumed to be one hour.
+
+CONFIG: {
+    package timelocal;
+    
+    @epoch = localtime(0);
+    $tzmin = $epoch[2] * 60 + $epoch[1];	# minutes east of GMT
+    if ($tzmin > 0) {
+	$tzmin = 24 * 60 - $tzmin;		# minutes west of GMT
+	$tzmin -= 24 * 60 if $epoch[5] == 70;	# account for the date line
+    }
+
+    $SEC = 1;
+    $MIN = 60 * $SEC;
+    $HR = 60 * $MIN;
+    $DAYS = 24 * $HR;
+    $YearFix = ((gmtime(946684800))[5] == 100) ? 100 : 0;
+}
+
+sub timegm {
+    package timelocal;
+
+    $ym = pack(C2, @_[5,4]);
+    $cheat = $cheat{$ym} || &cheat;
+    $cheat + $_[0] * $SEC + $_[1] * $MIN + $_[2] * $HR + ($_[3]-1) * $DAYS;
+}
+
+sub timelocal {
+    package timelocal;
+
+    $ym = pack(C2, @_[5,4]);
+    $cheat = $cheat{$ym} || &cheat;
+    $cheat + $_[0] * $SEC + $_[1] * $MIN + $_[2] * $HR + ($_[3]-1) * $DAYS
+	+ $tzmin * $MIN - 60 * 60 * ($_[8] != 0);
+}
+
+package timelocal;
+
+sub cheat {
+    $year = $_[5];
+    $month = $_[4];
+    $guess = $^T;
+    @g = gmtime($guess);
+    $year += $YearFix if $year < $epoch[5];
+    while ($diff = $year - $g[5]) {
+	$guess += $diff * (364 * $DAYS);
+	@g = gmtime($guess);
+    }
+    while ($diff = $month - $g[4]) {
+	$guess += $diff * (28 * $DAYS);
+	@g = gmtime($guess);
+    }
+    $g[3]--;
+    $guess -= $g[0] * $SEC + $g[1] * $MIN + $g[2] * $HR + $g[3] * $DAYS;
+    $cheat{$ym} = $guess;
+}
diff --git a/scripts/ntp-close b/scripts/ntp-close
new file mode 100755
index 0000000..b5077e6
--- /dev/null
+++ b/scripts/ntp-close
@@ -0,0 +1,8 @@
+#! /bin/sh
+
+lynx -source http://www.eecis.udel.edu/~mills/ntp/clock2.htm |
+	sed -n -e 's,).*,,' -e' /([0-9.]*$/s/.*(//p' |
+	xargs ntpdate -q |
+	sort -n +7 > /tmp/ntp-close
+
+# From: Neal McBurnett <neal@bcn.boulder.co.us>
diff --git a/scripts/ntp-groper b/scripts/ntp-groper
new file mode 100755
index 0000000..1fd0cfe
--- /dev/null
+++ b/scripts/ntp-groper
@@ -0,0 +1,95 @@
+#!/bin/sh 
+#
+# ntpgroper host ...
+#
+# This script checks each hostname given as an argument to see if
+# it is running NTP.  It reports one of the following messages (assume
+# the host is named "dumbo.hp.com":
+#
+#   dumbo.hp.com not registered in DNS
+#   dumbo.hp.com not responding to ping
+#   dumbo.hp.com refused ntpq connection
+#   dumbo.hp.com not responding to NTP
+#   dumbo.hp.com answers NTP version 2, stratum: 3, ref: telford.nsa.hp.com
+#   dumbo.hp.com answers NTP version 3, stratum: 3, ref: telford.nsa.hp.com
+#
+# It ain't pretty, but it is kinda useful.
+#
+# Walter Underwood, 11 Feb 1993, wunder@hpl.hp.com
+#
+# converted to /bin/sh from /bin/ksh by scott@ee.udel.edu 24 Mar 1993
+
+PATH="/usr/local/etc:$PATH" export PATH
+
+verbose=1
+logfile=/tmp/cntp-log$$
+ntpqlog=/tmp/cntp-ntpq$$
+
+# I wrap the whole thing in parens so that it is possible to redirect
+# all the output somewhere, if desired.
+(
+for host in $*
+do
+    # echo "Trying $host."
+
+    gethost $host > /dev/null 2>&1
+    if [ $? -ne 0 ]
+    then
+        echo "$host not registered in DNS"
+        continue
+    fi
+
+    ping $host 64 1 > /dev/null 2>&1 
+    if [ $? -ne 0 ]
+    then
+        echo "$host not responding to ping"
+	continue
+    fi
+    
+    # Attempt to contact with version 3 ntp, then try version 2.
+    for version in 3 2
+    do
+
+        ntpq -c "ntpversion $version" -p $host > $ntpqlog 2>&1
+
+        if fgrep -s 'Connection refused' $ntpqlog
+        then
+            echo "$host refused ntpq connection"
+            break
+        fi
+
+        responding=1
+        fgrep -s 'timed out, nothing received' $ntpqlog > /dev/null && responding=0
+
+        if   [ $responding -eq 1 ]
+        then
+	    ntpq -c "ntpversion $version" -c rl $host > $ntpqlog
+
+            # First we extract the reference ID (usually a host or a clock)
+            synchost=`fgrep "refid=" $ntpqlog`
+            #synchost=${synchost##*refid=} # strip off the beginning of the line
+            #synchost=${synchost%%,*}      # strip off the end  
+	    synchost=`expr "$synchost" : '.*refid=\([^,]*\),.*'`
+
+            # Next, we get the stratum
+            stratum=`fgrep "stratum=" $ntpqlog`
+            #stratum=${stratum##*stratum=}
+            #stratum=${stratum%%,*}
+	    stratum=`expr "$stratum" : '.*stratum=\([^,]*\),.*'`
+
+	    echo "$host answers NTP version $version, stratum: $stratum, ref: $synchost"
+            break;
+        fi
+
+	if [ $version -eq 2 -a $responding -eq 0 ]
+        then
+            echo "$host not responding to NTP"
+        fi
+    done
+done
+)
+# ) >> $logfile
+
+if [ -f $ntpqlog ]; then
+    rm $ntpqlog
+fi
diff --git a/scripts/ntp-restart b/scripts/ntp-restart
new file mode 100755
index 0000000..0a1d58a
--- /dev/null
+++ b/scripts/ntp-restart
@@ -0,0 +1,10 @@
+#!/bin/sh
+#
+# This script can be used to kill and restart the NTP daemon. Edit the
+# /usr/local/bin/ntpd line to fit.
+#
+kill -INT `ps -ax | egrep "ntpd" | egrep -v "egrep" | sed 's/^\([ 0-9]*\) .*/\1'/`
+sleep 10
+/usr/local/bin/ntpd -g
+/usr/local/bin/ntp-wait
+exit 0
diff --git a/scripts/ntp-status b/scripts/ntp-status
new file mode 100755
index 0000000..4109124
--- /dev/null
+++ b/scripts/ntp-status
@@ -0,0 +1,45 @@
+#!/bin/sh
+
+# From: Marc Brett <Marc.Brett@westgeo.com>
+
+# Here's a quick hack which can give you the stratum, delay, offset
+# for any number of ntp servers.
+
+NTPDATE=/usr/local/bin/ntpdate
+NSLOOKUP=/usr/sbin/nslookup
+EGREP=/bin/egrep
+AWK=/bin/awk
+RM=/bin/rm
+FILE=/tmp/ntp.$$
+
+USAGE="Usage: $0 hostname [hostname ...]"
+
+if [ $# -le 0 ]
+then
+	echo $USAGE 2>&1
+	exit 1
+fi
+
+trap '$RM -f $FILE; exit' 1 2 3 4 13 15
+
+for HOST in $*
+do
+    HOSTNAME=`$NSLOOKUP $HOST | $EGREP "Name:" | $AWK '{print $2}'`
+    if [ -n "$HOSTNAME" ]
+    then
+	$NTPDATE -d $HOST 2>/dev/null | $EGREP '^stratum|^delay|^offset|^originate' > $FILE
+	STRATUM=`$EGREP '^stratum' $FILE | $AWK '{print $2}'`
+	OFFSET=`$EGREP '^offset' $FILE | $AWK '{print $2}'`
+	DELAY=`$EGREP '^delay' $FILE | $AWK '{print $2}'`
+	TIMESTAMP=`$EGREP '^originate' $FILE | $AWK '{print $4 " " $5 " " $6 " " $7 " " $8}'`
+	if [ "$STRATUM" -ne 0 ]
+	then
+		echo "$HOSTNAME: stratum:$STRATUM delay:$DELAY offset:$OFFSET  $TIMESTAMP"
+	else
+		echo $HOSTNAME: Not running NTP
+	fi
+    fi
+
+done
+
+$RM -f $FILE
diff --git a/scripts/ntp-wait.in b/scripts/ntp-wait.in
new file mode 100644
index 0000000..a26630b
--- /dev/null
+++ b/scripts/ntp-wait.in
@@ -0,0 +1,42 @@
+#! @PATH_PERL@ -w
+
+die "perl5 needed\n" unless ($] > 5);
+
+use Getopt::Std;
+
+$opt_f = 0;			# 'Hard' failure if 'state' is unknown
+$opt_n = 1000;			# How many tries before we give up? (10 min+)
+$opt_s = 6;			# Seconds to sleep between tries (6s = 10/min)
+$opt_v = 0;			# Be verbose?
+
+getopts('fn:s:v');
+
+$cmd = 'ntpq -c "rv 0 state"';
+
+$| = 1;				# Autoflush output.
+
+print "Waiting for ntpd to synchronize...  " if ($opt_v);
+for ($i = 0; $i < $opt_n; ++$i) {
+    open(Q, $cmd." 2>&1 |") || die "Can't start ntpq: $!";
+    while(<Q>) {
+      if (/^state=4/) {
+	print "\bOK!\n" if ($opt_v);
+	exit 0;
+      }
+
+      if (/request variable was unknown/) {
+	print "\bCan't tell!\nPerhaps you are running an old version of ntpd.\n" if ($opt_v);
+	exit $opt_f;
+      }
+
+      if (/Connection refused/) {
+	print "\bntpd is not running!\n" if ($opt_v);
+	exit 1;
+      }
+    }
+    close(Q);
+    print "\b".substr("*+:.", $i % 4, 1) if ($opt_v);
+    sleep($opt_s);
+}
+print "\bNo!\nntpd did not synchronize.\n" if ($opt_v);
+exit 1;
diff --git a/scripts/ntpsweep.in b/scripts/ntpsweep.in
new file mode 100644
index 0000000..156fb45
--- /dev/null
+++ b/scripts/ntpsweep.in
@@ -0,0 +1,301 @@
+#! @PATH_PERL@ -w
+#
+# $Id$
+#
+# DISCLAIMER
+# 
+# Copyright (C) 1999,2000 Hans Lambermont and Origin B.V.
+# 
+# Permission to use, copy, modify and distribute this software and its
+# documentation for any purpose and without fee is hereby granted,
+# provided that the above copyright notice appears in all copies and
+# that both the copyright notice and this permission notice appear in
+# supporting documentation. This software is supported as is and without
+# any express or implied warranties, including, without limitation, the
+# implied warranties of merchantability and fitness for a particular
+# purpose. The name Origin B.V. must not be used to endorse or promote
+# products derived from this software without prior written permission.
+#
+# Hans Lambermont <Hans.Lambermont@nl.origin-it.com>/<H.Lambermont@chello.nl>
+# 14 Jan 2000
+
+require 5.0;		# But actually tested on 5.004 ;)
+use Getopt::Long;       # GetOptions()
+use strict;
+
+my $version = 1.3;
+(my $program = $0) =~ s%.*/(.+?)(.pl)?$%$1%;
+
+# Hardcoded paths/program names
+my $ntpdate = "ntpdate";
+my $ntpq = "ntpq";
+
+# no STDOUT buffering
+$| = 1;
+
+my ($help, $single_host, $showpeers, $maxlevel, $strip, $askversion);
+my $res = GetOptions("help!"      => \$help,
+		     "host=s"     => \$single_host,
+		     "peers!"     => \$showpeers,
+		     "maxlevel=s" => \$maxlevel,
+		     "strip=s"    => \$strip,
+		     "version!"   => \$askversion);
+
+if ($askversion) {
+    print("$version\n");
+    exit 0;
+}
+
+if ($help || ((@ARGV != 1) && !$single_host)) {
+    warn <<EOF;
+This is $program, version $version
+Copyright (C) 1999,2000 Hans Lambermont and Origin B.V.  Disclaimer inside.
+
+Usage:
+  $program [--help|--peers|--strip <string>|--maxlevel <level>|--version] \\
+    <file>|[--host <hostname>]
+
+Description:
+  $program prints per host given in <file> the NTP stratum level, the
+  clock offset in seconds, the daemon version, the operating system and
+  the processor. Optionally recursing through all peers.
+
+Options:
+--help
+    Print this short help text and exit.
+--version
+    Print version ($version) and exit.
+<file>
+    Specify hosts file. File format is one hostname or ip number per line.
+    Lines beginning with # are considered as comment.
+--host <hostname>
+    Speficy a single host, bypassing the need for a hosts file.
+--peers
+    Recursively list all peers a host synchronizes to.
+    An '= ' before a peer means a loop. Recursion stops here.
+--maxlevel <level>
+    Traverse peers up to this level (4 is a reasonable number).
+--strip <string>
+    Strip <string> from hostnames.
+
+Examples:
+    $program myhosts.txt --strip .foo.com
+    $program --host some.host --peers --maxlevel 4
+EOF
+    exit 1;
+}
+
+my $hostsfile = shift;
+my (@hosts, @known_hosts);
+my (%known_host_info, %known_host_peers);
+
+sub read_hosts()
+{
+    local *HOSTS;
+    open (HOSTS, $hostsfile) ||
+	die "$program: FATAL: unable to read $hostsfile: $!\n";
+    while (<HOSTS>) {
+	next if /^\s*(#|$)/; # comment/empty
+	chomp;
+	push(@hosts, $_);
+    }
+    close(HOSTS);
+}
+
+# translate IP to hostname if possible
+sub ip2name {
+    my($ip) = @_;
+    my($addr, $name, $aliases, $addrtype, $length, @addrs);
+    $addr = pack('C4', split(/\./, $ip));
+    ($name, $aliases, $addrtype, $length, @addrs) = gethostbyaddr($addr, 2);
+    if ($name) {
+        # return lower case name
+	return("\L$name");
+    } else {
+	return($ip);
+    }
+}
+
+# item_in_list($item, @list): returns 1 if $item is in @list, 0 if not
+sub item_in_list {
+    my($item, @list) = @_;
+    my($i);
+    foreach $i (@list) {
+	return 1 if ($item eq $i);
+    }
+    return 0;
+}
+
+sub scan_host($;$;$) {
+    my($host, $level, @trace) = @_;
+    my $stratum = 0;
+    my $offset = 0;
+    my $daemonversion = "";
+    my $system = "";
+    my $processor = "";
+    my @peers;
+    my $known_host = 0;
+
+    if (&item_in_list($host, @known_hosts)) {
+	$known_host = 1;
+    } else {
+	# ntpdate part
+	open(NTPDATE, "$ntpdate -bd $host 2>/dev/null |") ||
+    	die "Cannot open ntpdate pipe: $!\n";
+	while (<NTPDATE>) {
+	    /^stratum\s+(\d+).*$/ && do {
+		$stratum = $1;
+	    };
+	    /^offset\s+([0-9.-]+)$/ && do {
+		$offset = $1;
+	    };
+	}
+	close(NTPDATE);
+    
+	# got answers ? If so, go on.
+	if ($stratum) {
+	    # ntpq part
+	    my $ntpqparams = "-c 'rv 0 processor,system,daemon_version'";
+	    open(NTPQ, "$ntpq $ntpqparams $host 2>/dev/null |") ||
+		die "Cannot open ntpq pipe: $!\n";
+	    while (<NTPQ>) {
+		/daemon_version="(.*)"/ && do {
+		    $daemonversion = $1;
+		};
+		/system="([^"]*)"/ && do {
+		    $system = $1;
+		};
+		/processor="([^"]*)"/ && do {
+		    $processor = $1;
+		};
+	    }
+	    close(NTPQ);
+	    
+	    # Shorten daemon_version string.
+	    $daemonversion =~ s/(;|Mon|Tue|Wed|Thu|Fri|Sat|Sun).*$//;
+	    $daemonversion =~ s/version=//;
+	    $daemonversion =~ s/(x|)ntpd //;
+	    $daemonversion =~ s/(\(|\))//g;
+	    $daemonversion =~ s/beta/b/;
+	    $daemonversion =~ s/multicast/mc/;
+	
+	    # Shorten system string
+	    $system =~ s/UNIX\///;
+	    $system =~ s/RELEASE/r/;
+	    $system =~ s/CURRENT/c/;
+
+	    # Shorten processor string
+	    $processor =~ s/unknown//;
+	}
+    
+	# got answers ? If so, go on.
+	if ($daemonversion) {
+	    # ntpq again, find out the peers this time
+	    if ($showpeers) {
+		my $ntpqparams = "-pn";
+		open(NTPQ, "$ntpq $ntpqparams $host 2>/dev/null |") ||
+		    die "Cannot open ntpq pipe: $!\n";
+		while (<NTPQ>) {
+		    /^No association ID's returned$/ && do {
+			last;
+		    };
+		    /^     remote/ && do {
+			next;
+		    };
+		    /^==/ && do {
+			next;
+		    };
+		    /^( |x|\.|-|\+|#|\*|o)([^ ]+)/ && do {
+			push(@peers, ip2name($2));
+			next;
+		    };
+		    print "ERROR: $_";
+		}
+		close(NTPQ);
+	    }
+	}
+    
+	# Add scanned host to known_hosts array
+	push(@known_hosts, $host);
+	if ($stratum) {
+	    $known_host_info{$host} = sprintf("%2d %9.3f %-11s %-12s %s",
+		$stratum, $offset, substr($daemonversion,0,11),
+		substr($system,0,12), substr($processor,0,9));
+	} else {
+	    # Stratum level 0 is consider invalid
+	    $known_host_info{$host} = sprintf(" ?");
+	}
+	$known_host_peers{$host} = [@peers];
+    }
+
+    if ($stratum || $known_host) { # Valid or known host
+	my $printhost = ' ' x $level . $host;
+	# Shorten host string
+	if ($strip) {
+	    $printhost =~ s/$strip//;
+	}
+	# append number of peers in brackets if requested and valid
+	if ($showpeers && ($known_host_info{$host} ne " ?")) {
+	    $printhost .= " (" . @{$known_host_peers{$host}} . ")";
+	}
+	# Finally print complete host line
+	printf("%-32s %s\n",
+	    substr($printhost,0,32), $known_host_info{$host});
+	if ($showpeers && (eval($maxlevel ? $level < $maxlevel : 1))) {
+	    my $peer;
+	    push(@trace, $host);
+	    # Loop through peers
+	    foreach $peer (@{$known_host_peers{$host}}) {
+		if (&item_in_list($peer, @trace)) {
+		    # we've detected a loop !
+		    $printhost = ' ' x ($level + 1) . "= " . $peer;
+		    # Shorten host string
+		    if ($strip) {
+			$printhost =~ s/$strip//;
+		    }
+		    printf("%-32s %s\n",
+			substr($printhost,0,32));
+		} else {
+		    if (substr($peer,0,3) ne "127") {
+			&scan_host($peer, $level + 1, @trace);
+		    }
+		}
+	    }
+	}
+    } else { # We did not get answers from this host
+	my $printhost = ' ' x $level . $host;
+	# Shorten host string
+	if ($strip) {
+	    $printhost =~ s/$strip//;
+	}
+	printf("%-32s  ?\n", substr($printhost,0,32));
+    }
+}
+
+sub scan_hosts()
+{
+    my $host;
+    for $host (@hosts) {
+	my @trace;
+	push(@trace, $host);
+	scan_host($host, 0, @trace);
+    }
+}
+
+# Main program
+
+if ($single_host) {
+    push(@hosts, $single_host);
+} else {
+    &read_hosts($hostsfile);
+}
+
+# Print header
+print <<EOF;
+Host                             st offset(s) version     system       processor
+--------------------------------+--+---------+-----------+------------+---------
+EOF
+
+&scan_hosts();
+
+exit 0;
diff --git a/scripts/ntptrace.in b/scripts/ntptrace.in
new file mode 100755
index 0000000..8545b2c
--- /dev/null
+++ b/scripts/ntptrace.in
@@ -0,0 +1,60 @@
+#! @PATH_PERL@ -w
+
+# John Hay -- John.Hay@icomtek.csir.co.za / jhay@FreeBSD.org
+
+use Socket;
+use Getopt::Std;
+use vars qw($opt_n);
+
+$ntpq = "ntpq";
+
+getopts('n');
+
+$dodns = 1;
+$dodns = 0 if (defined($opt_n));
+
+$host = shift;
+$host ||= "127.0.0.1";
+
+for (;;) {
+	$stratum = 255;
+	$cmd = "$ntpq -n -c rv $host";
+	open(PH, $cmd . "|") || die "failed to start command $cmd: $!";
+	while (<PH>) {
+		$stratum = $1 if (/stratum=(\d+)/);
+		$peer = $1 if (/peer=(\d+)/);
+		# Very old servers report phase and not offset.
+		$offset = $1 if (/(?:offset|phase)=([^\s,]+)/);
+		$rootdelay = $1 if (/rootdelay=([^\s,]+)/);
+		$refid = $1 if (/refid=([^\s,]+)/);
+	}
+	close(PH) || die "$cmd failed";
+	last if ($stratum == 255);
+	$offset /= 1000;
+	$rootdelay /= 1000;
+	$dhost = $host;
+	# Only do lookups of IPv4 addresses. The standard lookup functions
+	# of perl only do IPv4 and I don't know if we should require extras.
+	if ($dodns && $host =~ /^(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})$/) {
+		$iaddr = inet_aton($host);
+		$name = (gethostbyaddr($iaddr, AF_INET))[0];
+		$dhost = $name if (defined($name));
+	}
+	printf("%s: stratum %d, offset %f, root distance %f",
+	    $dhost, $stratum, $offset, $rootdelay);
+	printf(", refid '%s'", $refid) if ($stratum == 1);
+	printf("\n");
+	last if ($stratum == 0 || $stratum == 1 || $stratum == 16);
+	last if ($refid =~ /^127\.127\.\d{1,3}\.\d{1,3}$/);
+
+	$cmd = "$ntpq -n -c \"pstat $peer\" $host";
+	open(PH, $cmd . "|") || die "failed to start command $cmd: $!";
+	$thost = "";
+	while (<PH>) {
+		$thost = $1, last if (/srcadr=(\S+),/);
+	}
+	close(PH) || die "$cmd failed";
+	last if ($thost eq "");
+	$host = $thost;
+}
+
diff --git a/scripts/ntpver.in b/scripts/ntpver.in
new file mode 100644
index 0000000..be36897
--- /dev/null
+++ b/scripts/ntpver.in
@@ -0,0 +1,7 @@
+#!@PATH_SH@
+# print version string of NTP daemon
+# Copyright (c) 1997 by Ulrich Windl
+# Modified 970318: Harlan Stenn: rewritten...
+# usage: ntpver hostname
+
+ntpq -c "rv 0 daemon_version" $* | awk '/daemon_version/ { print $2 }'
diff --git a/scripts/plot_summary.in b/scripts/plot_summary.in
new file mode 100644
index 0000000..3b46a04
--- /dev/null
+++ b/scripts/plot_summary.in
@@ -0,0 +1,337 @@
+#! @PATH_PERL@ -w
+# $Id$
+#
+# Use Gnuplot to display data in summary files produced by summary.pl.
+# This script requires GNUPLOT 3.7!
+#
+# Copyright (c) 1997, 1999 by Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+require 5.003; # "never tested with any other version of Perl"
+use strict;
+
+use Time::Local;
+use Getopt::Long;
+
+# parse command line
+my $summary_dir = "/tmp";
+my $identifier = "host " . `hostname`;	# origin of these data
+chomp $identifier;			# remove newline
+my $offset_limit = 0.128;		# limit of absolute offset
+my $output_file = "";			# output file defaults to stdout
+my $output_file_number = 1;		# numbering of output files
+my $gnuplot_terminal = $ENV{DISPLAY} ? "x11" : "dumb";
+my $wait_after_plot = 1;
+my @peer_list = ();
+
+my %options = ("directory|input-directory=s" => \$summary_dir,
+	       "identifier=s" => \$identifier,
+	       "offset-limit=f" => \$offset_limit,
+	       "output-file=s" => \$output_file,
+	       "peer=s@" => \@peer_list,
+	       "plot-term|gnuplot-term=s" => \$gnuplot_terminal,
+	       "wait-after-plot!" => \$wait_after_plot,
+	       );
+
+if ( !GetOptions(%options) )
+{
+    print STDERR "valid options for $0 are:\n";
+    my $opt;
+    foreach $opt (sort(keys %options)) {
+	print STDERR "\t--$opt\t(default is ";
+	if ( ref($options{$opt}) eq "ARRAY" ) {
+	    print STDERR join(", ",  map { "'$_'" } @{$options{$opt}});
+	} else {
+	    print STDERR "'${$options{$opt}}'";
+	}
+	print STDERR ")\n";
+    }
+    print STDERR "\n";
+    die;
+}
+
+chomp $identifier;
+die "illegal offset-limit: $offset_limit" unless $offset_limit > 0.0;
+$offset_limit *= 1e6;			# scale to microseconds
+
+# return the smallest value in the given list
+sub min
+{
+    my ($result, @rest) = @_;
+    map { $result = $_ if ($_ < $result) } @rest;
+    return($result);
+}
+
+# return the largest value in the given list
+sub max
+{
+    my ($result, @rest) = @_;
+    map { $result = $_ if ($_ > $result) } @rest;
+    return($result);
+}
+
+# maybe open alternate output file
+sub open_output
+{
+    my $file;
+    if ($output_file) {
+	while ( -r ($file = "$output_file$output_file_number") ) {
+	    ++$output_file_number;
+	}
+	open TOUCH, ">$file" and close TOUCH or die "$file: $!";
+	print "set output \"$file\"\n";
+    }
+}
+
+# make Gnuplot wait
+sub maybe_add_pause
+{
+    print "pause -1 \"Press key to continue...\"\n" if $wait_after_plot;
+}
+
+# plot data from loop summary
+sub do_loop
+{
+    my $fname = shift;
+    my $line;
+    my $out_file = "/tmp/tempdata$$";
+    my $cmd_file = "/tmp/tempcmd$$";
+    my ($first_day, $day_out) = ("", 0);
+    my ($lower_bound, $upper_bound, $rms);
+    my ($min_offs, $max_offs) = (1e9, -1e9);
+    my ($min_rms, $max_rms) = (1e9, -1e9);
+    open INPUT, "$fname" or die "$fname: $!";
+    open OUTPUT, ">$out_file" or die "$out_file: $!";
+    my @Fld;
+    while (<INPUT>) {
+	chop;	# strip record separator
+	@Fld = split;
+	if ($#Fld == 0) {
+# loops.19960405
+	    $_ = $Fld[0]; s/.*([12]\d{3}[01]\d[0-3]\d)$/$1/;
+	    m/(\d{4})(\d{2})(\d{2})/;
+	    $line = timegm(59, 59, 23, $3, $2 - 1, $1 - 1900, 0, 0, 0);
+	    $line = int $line / 86400;	# days relative to 1970
+	    $first_day = "$1-$2-$3 ($line)" unless $day_out;
+	    next;
+	}
+	if ($#Fld != 8) {
+	    warn "Illegal number of fields in file $fname, line $.";
+	    next;
+	}
+# loop 216, 856106+/-874041.5, rms 117239.8, freq 67.52+/-10.335, var 4.850
+	$_ = $Fld[1]; s/,/ /; $line .= " $_";
+	$_ = $Fld[2]; m:(.+?)\+/-(.+),:;
+	$lower_bound = $1 - $2;
+	$upper_bound = $1 + $2;
+	$line .= "$1 $lower_bound $upper_bound";
+	$min_offs = min($min_offs, $lower_bound);
+	$max_offs = max($max_offs, $upper_bound);
+	$_ = $Fld[4]; s/,/ /; $rms = $_;
+	$min_rms = min($min_rms, $rms);
+	$max_rms = max($max_rms, $rms);
+	$line .= " $rms";
+	$_ = $Fld[6]; m:(.+?)\+/-(.+),:;
+	$line .= " $1 " . ($1-$2) . " " . ($1+$2);
+	$line .= " $Fld[8]";
+	print OUTPUT "$line\n";
+	$day_out = 1;
+# 9621 216 856106 -17935.5 1730147.5 117239.8  67.52 57.185 77.855 4.850
+    }
+    close INPUT;
+    close OUTPUT or die "close failed on $out_file: $!";
+    my $ylimit = "[";
+    if ($min_offs < -$offset_limit) {
+	$ylimit .= "-$offset_limit";
+    }
+    $ylimit .= ":";
+    if ($max_offs > $offset_limit) {
+	$ylimit .= "$offset_limit";
+    }
+    if ( $ylimit eq "[:" ) {
+	$ylimit = "";
+    } else {
+	$ylimit = "[] $ylimit]";
+    }
+# build command file for GNUplot
+    open OUTPUT, "> $cmd_file" or die "$cmd_file: $!";
+    my $oldfh = select OUTPUT;
+    print "set term $gnuplot_terminal\n";
+    open_output;
+    print "set grid\n";
+    print "set title \"Loop Summary for $identifier: " .
+	"Daily mean values since $first_day\\n" .
+	"(Offset limit is $offset_limit microseconds)\"\n";
+    print "set ylabel \"[us]\"\n";
+    print "set data style yerrorbars\n";
+    print "set multiplot\n";
+    print "set size 1, 0.5\n";
+    print "set lmargin 8\n";
+    print "set origin 0, 0.5\n";
+    print "plot $ylimit \"$out_file\"" .
+	" using 1:3:4:5 title \"mean offset\", ";
+    print "\"$out_file\" using 1:(\$3-\$6/2) " .
+	"title \"(sigma low)\" with lines, ";
+    print "\"$out_file\" using 1:3 smooth bezier " .
+	"title \"(Bezier med)\" with lines, ";
+    print "\"$out_file\" using 1:(\$3+\$6/2) " .
+	"title \"(sigma high)\" with lines\n";
+    print "set ylabel \"[ppm]\"\n";
+    print "set origin 0, 0.0\n";
+    print "set title\n";
+    print "set xlabel \"Days relative to 1970\"\n";
+    print "plot \"$out_file\" using 1:7:8:9 title \"mean frequency\", ";
+    print "\"$out_file\" using 1:(\$7-\$10/2) " .
+	"title \"(sigma low)\" with lines, ";
+    print "\"$out_file\" using 1:7 smooth bezier " .
+	"title \"(Bezier med)\" with lines, ";
+    print "\"$out_file\" using 1:(\$7+\$10/2) " .
+	"title \"(sigma high)\" with lines\n";
+    print "set nomultiplot\n";
+    maybe_add_pause;
+
+    $ylimit = "[";
+    if ($min_rms < -$offset_limit) {
+	$ylimit .= "-$offset_limit";
+    }
+    $ylimit .= ":";
+    if ($max_rms > $offset_limit) {
+	$ylimit .= "$offset_limit";
+    }
+    if ( $ylimit eq "[:" ) {
+	$ylimit ="";
+    } else {
+	$ylimit = "[] $ylimit]";
+    }
+
+    open_output;
+    print "set title \"Loop Summary for $identifier: " .
+	"Standard deviation since $first_day\\n" .
+	"(Offset limit is $offset_limit microseconds)\"\n";
+    print "set xlabel\n";
+    print "set ylabel \"[us]\"\n";
+    print "set origin 0, 0.5\n";
+    print "set data style linespoints\n";
+    print "set multiplot\n";
+    print "plot $ylimit \"$out_file\" using 1:6 title \"Offset\", ";
+    print "\"$out_file\" using 1:6 smooth bezier " .
+	"title \"(Bezier)\" with lines\n";
+    print "set title\n";
+    print "set origin 0, 0.0\n";
+    print "set xlabel \"Days relative to 1970\"\n";
+    print "set ylabel \"[ppm]\"\n";
+    print "plot \"$out_file\" using 1:10 title \"Frequency\", ";
+    print "\"$out_file\" using 1:10 smooth bezier " .
+	"title \"(Bezier)\" with lines\n";
+    print "set nomultiplot\n";
+    maybe_add_pause;
+
+    close OUTPUT or die "close failed on $cmd_file: $!";
+    select $oldfh;
+    print `gnuplot $cmd_file`;
+    unlink $cmd_file;
+    unlink $out_file;
+}
+
+# plot data form peer summary
+sub do_peer
+{
+    my $fname = shift;
+    my $peer = shift;
+    my $out_file = "/tmp/tempdata$$";
+    my $cmd_file = "/tmp/tempcmd$$";
+    my $line;
+    my ($first_day, $day_out) = ("", 0);
+    open INPUT, "$fname" or die "$fname: $!";
+    open OUTPUT, ">$out_file" or die "$out_file: $!";
+    my @Fld;
+    while (<INPUT>) {
+	chop;	# strip record separator
+	@Fld = split;
+	if ($#Fld == 0) {
+# peers.19960405
+	    $_ = $Fld[0]; s/.*([12]\d{3}[01]\d[0-3]\d)$/$1/;
+	    m/(\d{4})(\d{2})(\d{2})/ or next;
+	    $line = timegm(59, 59, 23, $3, $2 - 1, $1 - 1900, 0, 0, 0);
+	    $line = int $line / 86400;	# days relative to 1970
+	    $first_day = "$1-$2-$3 ($line)" unless $day_out;
+	    next;
+	}
+	if ($#Fld != 7) {
+	    warn "Illegal number of fields in file $fname, line $.";
+	    next;
+	}
+	next if ($Fld[0] ne $peer);
+#       ident     cnt     mean     rms      max     delay     dist     disp
+# 127.127.8.1       38   30.972  189.867 1154.607    0.000  879.760  111.037
+	$Fld[0] = $line;
+	print OUTPUT join(' ', @Fld) . "\n";
+# 9969 38 30.972 189.867 1154.607 0.000 879.760 111.037
+	$day_out = 1;
+    }
+    close INPUT;
+    close OUTPUT or die "close failed on $out_file: $!";
+    die "no data found for peer $peer" if !$day_out;
+    open OUTPUT, "> $cmd_file" or die "$cmd_file: $!";
+    my $oldfh = select OUTPUT;
+    print "set term $gnuplot_terminal\n";
+    open_output;
+    print "set grid\n";
+    print "set multiplot\n";
+    print "set lmargin 8\n";
+    print "set size 1, 0.34\n";
+    print "set origin 0, 0.66\n";
+    print "set title " .
+	"\"Peer Summary for $peer on $identifier since $first_day\"\n";
+    print "set data style linespoints\n";
+    print "set ylabel \"[us]\"\n";
+    print "plot \"$out_file\" using 1:3 title \"mean offset\", ";
+    print "\"$out_file\" using 1:3 smooth bezier " .
+	"title \"(Bezier)\" with lines, ";
+    print "\"$out_file\" using 1:(\$3-\$7/2) " .
+	"title \"(sigma low)\" with lines, ";
+    print "\"$out_file\" using 1:(\$3+\$7/2) " .
+	"title \"(sigma high)\" with lines\n";
+    print "set title\n";
+    print "set origin 0, 0.34\n";
+    print "set size 1, 0.32\n";
+    print "set ylabel\n";
+    print "plot \"$out_file\" using 1:7 title \"dist\", ";
+    print "\"$out_file\" using 1:7 smooth bezier " .
+	"title \"(Bezier)\" with lines\n";
+    print "set origin 0, 0.00\n";
+    print "set size 1, 0.35\n";
+    print "set xlabel \"Days relative to 1970\"\n";
+    print "plot \"$out_file\" using 1:8 title \"disp\", ";
+    print "\"$out_file\" using 1:8 smooth bezier " .
+	"title \"(Bezier)\" with lines\n";
+    print "set nomultiplot\n";
+    maybe_add_pause;
+
+    select $oldfh;
+    close OUTPUT or die "close failed on $cmd_file: $!";
+    print `gnuplot $cmd_file`;
+    unlink $cmd_file;
+    unlink $out_file;
+}
+
+
+my $loop_summary ="$summary_dir/loop_summary";
+my $peer_summary ="$summary_dir/peer_summary";
+my $clock_summary="$summary_dir/clock_summary";
+
+do_loop $loop_summary;
+map { do_peer $peer_summary, $_ } @peer_list;
diff --git a/scripts/rc1/postinstall b/scripts/rc1/postinstall
new file mode 100644
index 0000000..d84b8c5
--- /dev/null
+++ b/scripts/rc1/postinstall
@@ -0,0 +1,2 @@
+#!/bin/sh
+/etc/init.d/xntp start
diff --git a/scripts/rc1/preinstall b/scripts/rc1/preinstall
new file mode 100644
index 0000000..aa18639
--- /dev/null
+++ b/scripts/rc1/preinstall
@@ -0,0 +1,6 @@
+#!/bin/sh
+if [ -x /etc/init.d/xntp ]
+then
+	/etc/init.d/xntp stop
+fi
+exit 0
diff --git a/scripts/rc1/preremove b/scripts/rc1/preremove
new file mode 100644
index 0000000..b870151
--- /dev/null
+++ b/scripts/rc1/preremove
@@ -0,0 +1,4 @@
+#!/bin/sh
+/etc/init.d/xntp stop
+
+exit 0
diff --git a/scripts/rc1/prototype b/scripts/rc1/prototype
new file mode 100644
index 0000000..3de20b0
--- /dev/null
+++ b/scripts/rc1/prototype
@@ -0,0 +1,19 @@
+!default 755 root bin
+i pkginfo
+i preinstall
+i postinstall
+i preremove
+f none /etc/init.d/xntp=xntp 0755 root other
+l none /etc/rc2.d/S79xntp=/etc/init.d/xntp
+l none /etc/rc1.d/K79xntp=/etc/init.d/xntp
+l none /etc/rc0.d/K79xntp=/etc/init.d/xntp
+f none /usr/sbin/xntpd=xntpd/xntpd 0555 root other
+f none /usr/sbin/xntpdc=xntpdc/xntpdc 0555 root other
+f none /usr/sbin/ntpq=ntpq/ntpq 0555 root other
+f none /usr/sbin/ntptrace=ntptrace/ntptrace 0555 root other
+f none /usr/sbin/ntpdate=ntpdate/ntpdate 0555 root other
+f none /usr/share/man/man1m/xntpd.1m=doc/xntpd.8 0444 root other
+f none /usr/share/man/man1m/xntpdc.1m=doc/xntpdc.8 0444 root other
+f none /usr/share/man/man1m/ntpdate.1m=doc/ntpdate.8 0444 root other
+f none /usr/share/man/man1m/ntpq.1m=doc/ntpq.8 0444 root other
+f none /usr/share/man/man1m/ntptrace.1m=doc/ntptrace.8 0444 root other
diff --git a/scripts/rc1/xntp b/scripts/rc1/xntp
new file mode 100644
index 0000000..227b943
--- /dev/null
+++ b/scripts/rc1/xntp
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+killproc() {	# kill named processes
+	pid=`/usr/bin/ps -e |
+		/usr/bin/grep $1 |
+		/usr/bin/sed -e 's/^  *//' -e 's/ .*//'`
+	[ "$pid" != "" ] && kill $pid
+}
+
+case "$1" in
+'start')
+	ps -e | grep xntpd > /dev/null 2>&1
+	if [ $? -eq 0 ]
+	then
+		echo "ntp daemon already running. ntp start aborted"
+		exit 0
+	fi
+	if [ -f /etc/inet/ntp.conf -a -x /usr/sbin/xntpd ]
+	then
+		/usr/sbin/xntpd -c /etc/inet/ntp.conf
+	fi
+	;;
+'stop')
+	killproc xntpd
+	;;
+*)
+	echo "Usage: /etc/init.d/xntp { start | stop }"
+	;;
+esac
diff --git a/scripts/rc2/local.ntpd b/scripts/rc2/local.ntpd
new file mode 100644
index 0000000..ba53e05
--- /dev/null
+++ b/scripts/rc2/local.ntpd
@@ -0,0 +1,64 @@
+#! /usr/bin/perl -w
+# 980904 Harlan Stenn - created
+
+# vvv CHANGE THESE vvv
+
+$ps = "/bin/ps x |";
+
+$ntp_conf = "/etc/ntp.conf";
+$ntpd = "/usr/local/bin/xntpd";
+$ntpdate = "/usr/local/bin/ntpdate -b -s 10.0.0.1 10.0.0.2";
+
+# ^^^ CHANGE THESE ^^^
+
+{
+  if (0)
+    {
+    }
+  elsif ($ARGV[0] eq "start")
+    {
+      @pidlist = pidlist($ntpd);
+      if (defined(@pidlist))
+        {
+	  warn "NTP is already running\n";
+        }
+      else
+        {
+	  if ( -f $ntp_conf && -x $ntpd )
+	    {
+	       system ($ntpdate);
+	       system ($ntpd." -c ".$ntp_conf);
+	    }
+        }
+    }
+  elsif ($ARGV[0] eq "stop")
+    {
+      @pidlist = pidlist($ntpd);
+      kill 'TERM', @pidlist if (scalar(@pidlist) > 0);
+    }
+  else
+    {
+      die "Usage: $0 {start,stop}\n";
+    }
+}
+
+sub pidlist ($)
+  {
+    my ($target) = @_;
+    my ($qt) = quotemeta($target);
+    my @pids;
+
+    open(PS, $ps) || die "Can't run ps: $!\n";
+    while (<PS>)
+      {
+	chomp;
+	next unless (/$qt/);
+	print "Got <$_>\n";
+	if (/^\s*(\d+)\s+/)
+	  {
+	    push @pids, $1;
+	  }
+      }
+    close(PS);
+    return @pids;
+  }
diff --git a/scripts/stats/README b/scripts/stats/README
new file mode 100644
index 0000000..6808963
--- /dev/null
+++ b/scripts/stats/README
@@ -0,0 +1,39 @@
+Statistics processing scripts (README)
+
+This directory contains a number of scripts for use with the filegen
+facility. Those files ending in .awk are for the Unix awk utility, while
+those ending in .sh are for the csh utility. Normally, the summary.sh
+script is called from a cron job once per day. This script processes the
+daily loopstats, peerstats and clockstats files produced by the daemon,
+updates the loop_summary, peer_summary and clock_summary archive files,
+and deletes the daily files.
+
+In the case of the Austron 2201A GPS receiver, the clockstats file
+contains a wealth of additional monitoring data. These data are summarized
+and writted to the clock_summary file, then a series of special files are
+constructed for later processing by the S utility.
+
+The summary.sh script invokes a number of awk scripts to actually produce
+the data. This may result in multiple scans of the same input file.
+The input file is deleted after processing. In fact, the shell scripts will
+process all input files found of the correct type in chronological order,
+deleting each one as it is scanned, except the current day file.
+
+The summary.sh script can produce input files for the S utility, if it
+is found on the search path. This utility makes PostScript graphs of the
+loopstats data for each day, as well as various statistics produced by
+the Austorn 220aA GPS receiver. The S utility is automatically run
+as a background job. Its control files have the .S extension.
+
+The psummary.awk script can be used to scan the peer_summary file and
+construct an historical reprise of the daily summaries. 
+
+The file formats are documented in the README.stats file and in the
+scripts themselves. Further detail on the radio clock ASCII timecode
+formats and related data are in the README.timecode file.
+
+David L. Mills
+University of Delaware
+mills@udel.edu
+1 November 1993
+Revised 12 April 1994 
diff --git a/scripts/stats/README.stats b/scripts/stats/README.stats
new file mode 100644
index 0000000..aa8e77f
--- /dev/null
+++ b/scripts/stats/README.stats
@@ -0,0 +1,246 @@
+Statistics file formats (README.stats)
+
+The xntp3 daemon can produce a variety of statistics files which are
+useful for maintenance, evaluation and retrospective calibration
+purposes. See the xntpd.8 man page for instructions on how to configure
+this feature. Since these files can become rather large and cumbersome,
+they are ordinarily reduced to summary form by running the summary.sh
+shell script once per day, week or month, as appropriate. There are
+three file collections presently defined: peerstats, loopstats and
+clockstats, each of which is described in this note.
+
+peerstats
+
+The following data are collected in the peerstats files. The files are
+reduced to summary data using the peer.sh shell script. See the peer.awk
+script for further information. A line in the file is produced upon
+reception of each valid update from a configured peer.
+
+  49236 30.756 140.173.96.1 9474 0.000603 0.37532
+
+  49236             modified Julian day number
+  30.756            time of day (s) past midnight UTC
+  140.173.96.1      peer identifier (IP address or receiver identifier)
+  9474              peer status word (hex) (see NTP specification)
+  0.000603          offset (s)
+  0.08929           delay (s)
+  0.37532           dispersion (s)
+
+loopstats
+
+The following data are collected in the loopstats files. The files are
+reduced to summary data using the loop.sh shell script. See the loop.awk
+script for further information. A line in the file is produced at each
+valid update of the local clock.
+
+  49236 11.897 -0.000004 -35.9384 0
+
+  49236             modified Julian day number
+  11.897            time of day (s) past midnight UTC
+  -0.000004         time offset (s)
+  -35.9384          frequency offset (ppm)
+  0                 phase-lock loop time constant
+
+clockstats
+
+The following data are collected in the clockstats files. The files are
+reduced to summary data using the clock.sh shell script, which also
+updates the ensemble, etf, itf and tdata data files as well. See the
+clock.awk, ensemble.awk, etf.awk, itf.awk and tdta.awk scripts for
+further information. A line in the file is produced at each valid update
+received from a configured radio clock. Data are at present recorded for
+several radios. The first part of each data line is similar for all
+radios, e.g.:
+
+  49234 60517.826 127.127.4.1   93 247 16:48:21.814
+
+  49234             modified Julian day number
+  60517.826         time of day (s) past midnight UTC
+  127.127.4.1       receiver identifier (Spectracom 8170/Netclock-2)
+  93 247 16:48:21.814  timecode (format varies)
+
+In the case of the Austron GPS receiver, a good deal of additional
+information is extracted from the radio, as described below. The formats
+shown consist of one line with all the fields shown in order. The
+timecode formats specific to each radio follow. See the file
+README.timecodes for detailed information on the timecode formats used
+by these radios.
+
+Spectracom 8170/Netclock-2 WWVB receiver
+
+  49234 60517.826 127.127.4.1 ?A93 247 16:48:21.814
+
+  The '?' and 'A' characters are present only when the receiver is
+  unsynchronized; otherwise, they are replaced by space ' ' characters.
+
+IRIG audio decoder
+
+  49234 60517.826 127.127.6.0 247 16:48:21?
+
+  The '?' character is present only when the receiver is unsynchronized.
+
+Austron 2200A/2201A GPS receiver
+
+  49234 60580.843 127.127.10.1 93:247:16:49:24.814?
+
+  The '?' character is present only when the receiver is unsynchronized.
+
+Depending on the installed options, the Austron 2200A/2201A recognizes a
+number of special commands that report various data items. See the
+refclock_as2201.c source module for a list of the commands used. These
+data are collected only if the following line is included in the
+configuration file ntp.conf:
+
+  fudge 127.127.10.1 flag4 1    # enable extended statistics collection
+
+The format of each data line returned is summarized in the following
+list.
+
+External time/frequency data (requires input buffer option IN)
+
+These data determine the deviations of external time/frequency inputs
+relative to receiver oscillator time. The following data are typical
+using an external cesium oscillator PPS and 5-MHz outputs.
+
+  49234 60580.843 127.127.10.1 93:247:16:49:24.814 ETF
+
+  -85.9             time interval (ns)
+  -89.0             average time interval (ns)
+  4.0               time interval sigma (ns)
+  +1.510E-11        time interval rate
+  -4.500E-11        deltaf/f
+  +1.592E-11        average deltaf/f
+  5.297E-13         sigma deltaf/f
+  500               number of samples
+
+Model and option identifiers
+
+These data show the receiver model number and option configuration.
+
+  49234 60708.848 127.127.10.1 93:247:16:51:32.817 ID;OPT;VER
+
+  GPS 2201A         model ident (must be "GPS 2200A" or "GPS 2201A")
+  TTY1              rs232 option present (required)
+  TC1               IRIG option present (optional)
+  LORAN             LORAN assist option present (optional)
+  IN                input buffer option present (optional)
+  OUT1              output buffer option present (required)
+  B.00              data processor software version ("B.00" or later)
+  B.00              signal processor software version ("B.00" or later)
+  28-Apr-93         software version date ("28-Apr-93" or later)
+
+Internal time/frequency data
+
+These data determine the deviations of the receiver oscillator with
+respect to satellite time.
+
+  49234 60564.846 127.127.10.1 93:247:16:49:08.816 ITF
+
+  COCO              current mode (must be "COCO")
+  0                 code coast mode (must be zero)
+  +6.6152E-08       code sigma (s)
+  -3.5053E-08       code delta t (s)
+  -4.0361E-11       deltat/t
+  -6.4746E-11       oscillator ageing rate
+  500.00            loop time constant
+  4.984072          electrical tuning (V)
+
+GPS/LORAN ensemble data (requires LORAN assist option LORAN)
+
+These data determine the deviations and weights to calculate ensemble
+time from GPS and LORAN data.
+
+  49234 60596.852 127.127.10.1 93:247:16:49:40.812 LORAN ENSEMBLE
+
+  +9.06E-08         GPS t (s)
+  +3.53E-08         GPS sigma (s)
+  .532              GPS weight
+  +3.71E-08         LORAN t (s)
+  +3.76E-08         LORAN sigma (s)
+  .468              LORAN weight
+  +6.56E-08         ensemble t
+  +6.94E-08         ensemble sigma (s)
+
+LORAN stationkeeping data (requires LORAN assist option LORAN)
+
+These data determine which stations of the LORAN chain are being
+tracked, together with individual signal/noise ratios, deviations and
+weights.
+
+  49234 60532.850 127.127.10.1 93:247:16:48:36.820 LORAN TDATA
+
+  M                 station identifier; data follows
+  OK                status (must be "OK" for tracking)
+  0                 cw flag
+  0                 sw flag
+  1162.17           time of arrival
+  -4.6              snr (-30.0 if not "OK" status)
+  1.67E-07          2-sample phase-time deviation
+  .507              weight (included only if "OK" status)
+  W AQ 0 0 3387.80 -31.0  station identifier and data
+  X OK 0 0 1740.27 -11.2 2.20E-07 .294  station identifier and data
+  Y OK 0 0 2180.71 -4.6 2.68E-07 .198  station identifier and data
+  Z CV 0 0 3392.94 -30.0  station identifier and data
+
+Oscillator status and environment
+
+These data determine the receiver oscillator type, mode, status and
+environment. Nominal operating conditions are shown below.
+
+  49234 60628.847 127.127.10.1 93:247:16:50:12.817 OSC;ET;TEMP
+
+  1121 Software     Control  oscillator model and mode (must be
+                    "Software Control")
+  Locked            status (must be "Locked")
+  4.979905          electrical tuning (V)
+  44.81             oscillator cavity temperature
+
+Receiver position, status and offsets
+
+These data determine the receiver position and elevation, together with
+programmable delay corrections for the antenna cable and receiver.
+
+  49234 60788.847 127.127.10.1 93:247:16:52:52.817 POS;PPS;PPSOFF
+
+  +39:40:48.425     receiver latitude (N)
+  -075:45:02.392    receiver longitude (E)
+  +74.09            receiver elevation (m)
+  Stored            position status (must be "Stored")
+  UTC               PPS/PPM alignment (must be "UTC")
+  0                 receiver delay (ns) (should be zero for calibrated
+                    receiver)
+  200               cable delay (ns)
+  0                 user time bias (ns) (must be zero)
+
+Satellite tracking status
+
+These data determine how many satellites are being tracked. At the
+present state of constellation development, there should be at least
+three visible satellites in view. Much of the time the maximum of
+seven are being tracked; rarely this number drops to two.
+
+  49234 60612.850 127.127.10.1 93:247:16:49:56.820 TRSTAT
+
+  24 T              satellite prn and status (T = track, A = acquire)
+  16 A 13 T 20 T 18 T 07 T 12 T  list continued
+
+UTC leap-second information
+
+These data determine when the next leap second is to occur. The exact
+method to use is obscure.
+
+  49234 60548.847 127.127.10.1 93:247:16:48:52.818 UTC
+
+  -1.2107E-08       A0 term (s)
+  -1.2790E-13       A1 term (s)
+  +9.0000E+00       current leap seconds (s)
+  +2.0480E+05       time for leap seconds (s)
+  +2.0100E+02       week number for delta leap (weeks)
+  +1.9100E+02       week number for future leap (weeks)
+  +4.0000E+00       day number for future leap (days)
+  +9.0000E+00       future leap seconds (s)
+
+David L. Mills
+University of Delaware
+mills@udel.edu
+23 October 1993
diff --git a/scripts/stats/README.timecodes b/scripts/stats/README.timecodes
new file mode 100644
index 0000000..00b5ba5
--- /dev/null
+++ b/scripts/stats/README.timecodes
@@ -0,0 +1,149 @@
+Radio Timecode Formats (README.timecodes)
+
+Following are examples of the serial timecode formats used by various
+timecode receivers as given in the instruction manuals. These examples
+are intended only for illustration and not as the basis of system
+design. The following symbols are used to identify the timecode
+character that begins a subfield. The values given after this symbol
+represent the character offset from the beginning of the timecode string
+as edited to remove control characters.
+
+C         on-time character (start bit)
+Y         year of century
+T         time of day
+D         day of year or month/day
+A         alarm indicator (format specific)
+Q         quality indicator (format specific)
+<LF>      ASCII line feed (hex 0a)
+<CR>      ASCII carriage return (hex 0d)
+<SP>      ASCII space (hex 20)
+
+In order to promote uniform behavior in the various implementations, it
+is useful to have a common interpretation of alarm conditions and signal
+quality. When the alarm indicator it on, the receiver is not operating
+correctly or has never synchronized to the broadcast signal. When the
+alarm indicator is off and the quality indicator is on, the receiver has
+synchronized to the broadcast signal, then lost the signal and is
+coasting on its internal oscillator.
+
+In the following uppercase letters, punctuation marks and spaces <SP>
+stand for themselves; lowercase letters stand for fields as described.
+Special characters other than <LF>, <CR> and <SP> are preceded by ^.
+
+Spectracom 8170 and Netclock/2 WWV Synchonized Clock (format 0)
+
+"<CR><LF>i  ddd hh:mm:ss  TZ=zz<CR><LF>"
+ C       A  D   T
+
+     poll: ?; offsets: Y = none, D = 3, T = 7, A = 0, Q = none
+     i = synchronization flag (<SP> = in synch, ? = out synch)
+     ddd = day of year
+     hh:mm:ss = hours, minutes, seconds
+     zz = timezone offset (hours from UTC)
+
+     Note: alarm condition is indicated by other than <SP> at A, which
+     occurs during initial synchronization and when received signal has
+     been lost for about ten hours
+
+     example: "   216 15:36:43  TZ=0"
+               A  D   T
+
+Netclock/2 WWV Synchonized Clock (format 2)
+
+"<CR><LF>iqyy ddd hh:mm:ss.fff ld"
+ C       AQY  D   T
+
+     poll: ?; offsets: Y = 2, D = 5, T = 9, A = 0, Q = 1
+     i = synchronization flag (<SP> = in synch, ? = out synch)
+     q = quality indicator (<SP> < 1ms, A < 10 ms, B < 100 ms, C < 500
+     ms, D > 500 ms)
+     yy = year (as broadcast)
+     ddd = day of year
+     hh:mm:ss.fff = hours, minutes, seconds, milliseconds of day
+     l = leap-second warning (L indicates leap at end of month)
+     d = standard/daylight time indicator (<SP> standard, D daylight)
+
+     Note: alarm condition is indicated by other than <SP> at A, which
+     occurs during initial synchronization and when received signal has
+     been lost for about ten hours; unlock condition is indicated by
+     other than <SP> at Q, with time since last lock indicated by the
+     letter code A < 13 min, B < 1.5 hr, C < 7 hr, D > 7 hr.
+
+     example: "  92 216 15:36:43.640  D"
+               AQ   D   T
+
+TrueTime 468-DC Satellite Synchronized Clock (and other TrueTime
+receivers)
+
+"<CR><LF><^A>ddd:hh:mm:ssq<CR>"
+              D   T       QC
+
+     poll: none; offsets: Y = none, D = 0, T = 4, A = 12, Q = 12
+     hh:mm:ss = hours, minutes, seconds
+     q = quality/alarm indicator (<SP> = locked, ? = alarm)
+
+     Note: alarm condition is indicated by ? at A, which occurs during
+     initial synchronization and when received signal is lost for an
+     extended period; unlock condition is indicated by other than <SP>
+     at Q
+
+     example: "216:15:36:43 "
+               D   T       Q
+
+Heath GC-1000 Most Accurate Clock (WWV/H)
+
+"<CR>hh:mm:ss.f     dd/mm/yy<CR>"
+ C   T        A     D
+
+     poll: none; offsets: Y = none, D = 15, T = 0, A = 9, Q = none
+     hh:mm:ss = hours, minutes, seconds
+     f = deciseconds (? when out of spec)
+     dd/mm = day, month
+     yy = year of century (from DIPswitches)
+
+     Note: 0?:??:??.? is displayed before synch is first established and
+     hh:mm:ss.? once synch is established and then lost again for about
+     a day.
+
+     example: "15:36:43.6     04/08/91"
+               T        A     D     Y
+
+PST/Traconex 1020 Time Source (WWV/H) (firmware revision V4.01)
+
+"frdzycchhSSFTttttuuxx<CR>" "ahh:mm:ss.fffs<CR>" "yy/dd/mm/ddd<CR>"
+          A   Q               T                   Y  D
+
+     poll: "QMQDQT"; offsets: Y = 0, D = 3 T = 1,, A = 11, Q = 13
+     f = frequency enable (O = all frequencies enabled)
+     r = baud rate (3 = 1200, 6 = 9600)
+     d = features indicator (@ = month/day display enabled)
+     z = time zone (0 = UTC)
+     y = year (5 = 1991)
+     cc = WWV propagation delay (52 = 22 ms)
+     hh = WWVH propagation delay (81 = 33 ms)
+     SS = status (80 or 82 = operating correctly)
+     F = current receive frequency (1-5 = 2.5, 5, 10, 15, 20 MHz)
+     T = transmitter (C = WWV, H = WWVH)
+     tttt = time since last update (minutes)
+     uu = flush character (03 = ^C)
+     xx = 94 (unknown) (firmware revision X4.01.999 only)
+
+     a = AM/PM indicator (A = AM, P = PM, <SP> - 24-hour format)
+     hh:mm:ss.fff = hours, minutes, seconds, milliseconds of day
+     s = daylight-saving indicator (<SP> standard, D daylight)
+
+     yy = year of century (from DIPswitches)
+     dd/mm/ddd = day of month, month of year, day of year
+
+     Note: The alarm condition is indicated by other than ? at A, which
+     occurs during initial synchronization and when received signal is
+     lost for an extended period. A receiver unlock condition is
+     indicated by other than "0000" in the tttt subfield at Q.
+
+     example: "O3@055281824C00000394 91/08/04/216  15:36:43.640"
+                             T       Y        D    T
+
+David L. Mills
+University of Delaware
+mills@udel.edu
+23 October 1993
diff --git a/scripts/stats/clock.awk b/scripts/stats/clock.awk
new file mode 100755
index 0000000..ef62da9
--- /dev/null
+++ b/scripts/stats/clock.awk
@@ -0,0 +1,431 @@
+# awk program to scan clockstat files and report errors/statistics
+#
+# usage: awk -f check.awk clockstats
+#
+# This program works for the following radios:
+# PST/Traconex 1020 WWV reciever
+# Arbiter 1088 GPS receiver
+# Spectracom 8170/Netclock-2 WWVB receiver
+# IRIG audio decoder
+# Austron 2200A/2201A GPS receiver (see README.austron file)
+#
+BEGIN {
+	etf_min = osc_vmin = osc_tmin = 1e9
+	etf_max = osc_vmax = osc_tmax = -1e9
+}
+#
+# scan all records in file
+#
+{
+	#
+	# select PST/Traconex WWV records
+	# 00:00:37.234  96/07/08/190 O6@0:5281825C07510394
+	#
+	if (NF >= 4 && $3 == "127.127.3.1") {
+		if (substr($6, 14, 4) > "0010")
+			wwv_sync++
+		if (substr($6, 13, 1) == "C")
+			wwv_wwv++
+		if (substr($6, 13, 1) == "H")
+			wwv_wwvh++
+		x = substr($6, 12, 1)
+		if (x == "1")
+			wwv_2.5++
+		else if (x == "2")
+			wwv_5++
+		else if (x == "3")
+			wwv_10++
+		else if (x == "4")
+			wwv_15++
+		else if (x == "5")
+			wwv_20++
+		continue
+	}
+	#
+	# select Arbiter GPS records
+	# 96 190 00:00:37.000 0 V=08 S=44 T=3 P=10.6 E=00
+	# N39:42:00.951 W075:46:54.880 210.55      2.50 0.00
+	#
+	if (NF >= 4 && $3 == "127.127.11.1") {
+		if (NF > 8) {
+			arb_count++
+			if ($7 != 0)
+				arb_sync++
+			x = substr($10, 3, 1)
+			if (x == "0")
+				arb_0++
+			else if (x == "1")
+				arb_1++
+			else if (x == "2")
+				arb_2++
+			else if (x == "3")
+				arb_3++
+			else if (x == "4")
+				arb_4++
+			else if (x == "5")
+				arb_5++
+			else if (x == "6")
+			arb_6++
+		} else if (NF == 8) {
+			arbn++
+			arb_mean += $7
+			arb_rms += $7 * $7
+			if (arbn > 0) {
+				x = $7 - arb_val
+				arb_var += x * x
+			}
+			arb_val = $7
+		}
+		continue
+	}
+	#
+	# select Spectracom WWVB records
+	# see summary for decode
+	#   96 189 23:59:32.248  D
+	#
+	if (NF >= 4 && $3 == "127.127.4.1") {
+		if ($4 == "SIGNAL" || NF > 7)
+			printf "%s\n", $0
+		else {
+			wwvb_count++
+			if ($4 ~ /\?/)
+				wwvb_x++
+			else if ($4 ~ /A/)
+				wwvb_a++
+			else if ($4 ~ /B/)
+				wwvb_b++
+			else if ($4 ~ /C/)
+				wwvb_c++
+			else if ($4 ~ /D/)
+				wwvb_d++
+		}
+		continue
+	}
+	#
+	# select IRIG audio decoder records
+	# see summary for decode
+	#
+	if (NF >= 4 && $3 == "127.127.6.0") {
+		irig_count++
+		if ($5 ~ /\?/)
+			irig_error++
+		continue
+	}
+	#
+	# select Austron GPS LORAN ENSEMBLE records
+	# see summary for decode
+	#
+	else if (NF >= 13 && $6 == "ENSEMBLE") {
+		ensemble_count++
+		if ($9 <= 0)
+			ensemble_badgps++
+		else if ($12 <= 0)
+			ensemble_badloran++
+		else {
+			if ($13 > 200e-9 || $13 < -200e-9)
+				ensemble_200++
+			else if ($13 > 100e-9 || $13 < -100e-9)
+				ensemble_100++
+			ensemble_mean += $13
+			ensemble_rms += $13 * $13
+		}
+		continue
+	}
+	#
+	# select Austron LORAN TDATA records
+	# see summary for decode; note that signal quality log is simply
+	# copied to output
+	#
+	else if (NF >= 7 && $6 == "TDATA") {
+                tdata_count++
+                for (i = 7; i < NF; i++) {
+                        if ($i == "M" && $(i+1) == "OK") {
+                                i += 5
+                                m += $i
+                		tdata_m++
+		        }
+                        else if ($i == "W" && $(i+1) == "OK") {
+                                i += 5
+                                w += $i
+                        	tdata_w++
+			}
+                        else if ($i == "X" && $(i+1) == "OK") {
+                                i += 5
+                                x += $i
+                        	tdata_x++
+			}
+                        else if ($i == "Y" && $(i+1) == "OK") {
+                                i += 5
+                                y += $i
+                        	tdata_y++
+			}
+                        else if ($i == "Z" && $(i+1) == "OK") {
+                                i += 5
+                                z += $i
+                        	tdata_z++
+			}
+		}	
+		continue
+	}
+	#
+	# select Austron ITF records
+	# see summary for decode
+	#
+	else if (NF >= 13 && $5 == "ITF" && $12 >= 100) {
+		itf_count++
+		if ($9 > 200e-9 || $9 < -200e-9)
+			itf_200++
+		else if ($9 > 100e-9 || $9 < -100e-9)
+			itf_100++
+		itf_mean += $9
+		itf_rms += $9 * $9
+		itf_var += $10 * $10
+		continue
+	}
+	#
+	# select Austron ETF records
+	# see summary for decode
+	#
+	else if (NF >= 13 && $5 == "ETF" && $13 >= 100) {
+		etf_count++
+		if ($6 > etf_max)
+			etf_max = $6
+		else if ($6 < etf_min)
+			etf_min = $6
+		etf_mean += $6
+		etf_rms += $6 * $6
+		etf_var += $9 * $9
+		continue
+	}
+	#
+	# select Austron TRSTAT records
+	# see summary for decode
+	#
+	else if (NF >= 5 && $5 == "TRSTAT") {
+		trstat_count++
+		j = 0
+		for (i = 6; i <= NF; i++)
+			if ($i == "T")
+				j++
+		trstat_sat[j]++
+		continue
+	}
+	#
+	# select Austron ID;OPT;VER records
+	#
+	# config GPS 2201A TTY1 TC1 LORAN IN OUT1 B.00 B.00 28-Apr-93
+	#
+	# GPS 2201A	receiver model
+	# TTY1		rs232 moduel
+	# TC1		IRIG module
+	# LORAN		LORAN assist module
+	# IN		input module
+	# OUT1		output module
+	# B.00 B.00	firmware revision
+	# 28-Apr-9	firmware date3
+        #
+	else if (NF >= 5 && $5 == "ID;OPT;VER") {
+		id_count++
+		id_temp = ""
+		for (i = 6; i <= NF; i++)
+			id_temp = id_temp " " $i
+		if (id_string != id_temp)
+			printf "config%s\n", id_temp
+		id_string = id_temp
+		continue	
+	}
+	#
+	# select Austron POS;PPS;PPSOFF records
+	#
+	# position +39:40:48.425 -075:45:02.392 +74.09 Stored UTC 0 200 0
+	#
+	# +39:40:48.425	position north latitude
+	# -075:45:02.392 position east longitude
+	# +74.09	elevation (meters)
+	# Stored	position is stored
+	# UTC		time is relative to UTC
+	# 0 200 0	PPS offsets
+	#
+	else if (NF >= 5 && $5 == "POS;PPS;PPSOFF") {
+		pos_count++
+		pos_temp = ""
+		for (i = 6; i <= NF; i++)
+			pos_temp = pos_temp " " $i
+		if (pos_string != pos_temp)
+			printf "position%s\n", pos_temp
+		pos_string = pos_temp
+	continue
+	}
+	#
+	# select Austron OSC;ET;TEMP records
+	#
+	# loop 1121 Software Control Locked
+	#
+	# 1121		oscillator type
+	# Software Control loop is under software control
+	# Locked	loop is locked
+	#
+	else if (NF >= 5 && $5 == "OSC;ET;TEMP") {
+		osc_count++
+		osc_temp = $6 " " $7 " " $8 " " $9
+		if (osc_status != osc_temp)
+			printf "loop %s\n", osc_temp
+		osc_status = osc_temp
+		if ($10 > osc_vmax)
+			osc_vmax = $10
+		if ($10 < osc_vmin)
+			osc_vmin = $10
+		if ($11 > osc_tmax)
+			osc_tmax = $11
+		if ($11 < osc_tmin)
+			osc_tmin = $11
+	continue
+	}
+	#
+	# select Austron UTC records
+	# these ain't ready yet
+	#
+	else if (NF >= 5 && $5 == "UTC") {
+		utc_count++
+		utc_temp = ""
+		for (i = 6; i <= NF; i++)
+			utc_temp = utc_temp " " $i
+		if (utc_string != utc_temp)
+#			printf "utc%s\n", utc_temp
+                utc_string = utc_temp
+	continue
+	}
+} END {
+#
+# PST/Traconex WWV summary data
+#
+	if (wwv_wwv + wwv_wwvh > 0)
+		printf "wwv %d, wwvh %d, err %d, MHz (2.5) %d, (5) %d, (10) %d, (15) %d, (20) %d\n", wwv_wwv, wwv_wwvh, wwv_sync, wwv_2.5, wwv_5, wwv_10, wwv_15, wwv_20
+#
+# Arbiter 1088 summary data
+#
+# gps		record count
+# err		error count
+# sats(0-6)	satellites tracked
+# mean		1 PPS mean (us)
+# rms		1 PPS rms error (us)
+# var		1 PPS Allan variance
+#
+	if (arb_count > 0) {
+		printf "gps %d, err %d, sats(0-6) %d %d %d %d %d %d %d", arb_count, arb_sync, arb_0, arb_1, arb_2, arb_3, arb_4, arb_5, arb_6
+		if (arbn > 1) {
+			arb_mean /= arbn
+			arb_rms = sqrt(arb_rms / arbn - arb_mean * arb_mean)
+			arb_var = sqrt(arb_var / (2 * (arbn - 1)))
+			printf ", mean %.2f, rms %.2f, var %.2e\n", arb_mean, arb_rms, arb_var * 1e-6
+		} else {
+			printf "\n"
+		}
+	}
+#
+# ensemble summary data
+#
+# ensemble	record count
+# badgps	gps data unavailable
+# badloran	loran data unavailable
+# rms		ensemble rms error (ns)
+# >200		ensemble error >200 ns
+# >100		100 ns < ensemble error < 200 ns
+#
+	if (ensemble_count > 0) {
+		ensemble_mean /= ensemble_count
+		ensemble_rms = sqrt(ensemble_rms / ensemble_count - ensemble_mean * ensemble_mean) * 1e9 
+		printf "ensemble %d, badgps %d, badloran %d, rms %.1f, >200 %d, >100 %d\n", ensemble_count, ensemble_badgps, ensemble_badloran, ensemble_rms, ensemble_200, ensemble_100
+	}
+#
+# wwvb summary data
+#
+# wwvb		record count
+# ?		unsynchronized
+# >1		error > 1 ms
+# >10		error > 10 ms
+# >100		error > 100 ms
+# >500		error > 500 ms
+#
+	if (wwvb_count > 0)
+		printf "wwvb %d, ? %d, >1 %d, >10 %d, >100 %d, >500 %d\n", wwvb_count, wwvb_x, wwvb_a, wwvb_b, wwvb_c, wwvb_d
+#
+# irig summary data
+#
+# irig		record count
+# err		error count
+#
+	if (irig_count > 0)
+		printf "irig %d, err %d\n", irig_count, irig_error
+#
+# tdata summary data
+#
+# tdata		record count
+# m		M master OK-count, mean level (dB)
+# w		W slave OK-count, mean level (dB)
+# x		X slave OK-count, mean level (dB)
+# y		Y slave OK-count, mean level (dB)
+# z		Z slave OK-count, mean level (dB)
+#
+	if (tdata_count > 0 ) {
+		if (tdata_m > 0)
+			m /= tdata_count
+		if (tdata_x > 0)
+			w /= tdata_count
+		if (tdata_x > 0)
+			x /= tdata_count
+		if (tdata_y > 0)
+			y /= tdata_count
+		if (tdata_z > 0)
+			z /= tdata_count
+		printf "tdata %d, m %d %.1f, w %d %.1f, x %d %.1f, y %d %.1f, z %d %.1f\n", tdata_count, tdata_m, m, tdata_w, w, tdata_x, x, tdata_y, y, tdata_z, z
+	}
+#
+# itf summary data
+#
+# itf		record count
+# rms		itf rms error (ns)
+# >200		itf error > 200 ns
+# >100		itf error > 100 ns
+# var		Allan variance
+#
+	if (itf_count > 1) { 
+		itf_mean /= itf_count
+		itf_rms = sqrt(itf_rms / itf_count - itf_mean * itf_mean) * 1e9
+		itf_var = sqrt(itf_var / (2 * (itf_count - 1)))
+		printf "itf %d, rms %.1f, >200 %d, >100 %d, var %.2e\n", itf_count, itf_rms, itf_200, itf_100, itf_var
+	}
+#
+# etf summary data
+#
+# etf		record count
+# mean		etf mean (ns)
+# rms		etf rms error (ns)
+# max		etf maximum (ns)
+# min		etf minimum (ns)
+# var		Allan variance
+#
+	if (etf_count > 0) {
+                etf_mean /= etf_count
+		etf_rms = sqrt(etf_rms / etf_count - etf_mean * etf_mean)
+		etf_var = sqrt(etf_var / (2 * (etf_count - 1)))
+		printf "etf %d, mean %.1f, rms %.1f, max %d, min %d, var %.2e\n", etf_count, etf_mean, etf_rms, etf_max, etf_min, etf_var
+	}
+#
+# trstat summary data
+#
+# trstat	record count
+# sat		histogram of tracked satellites (0 - 7)
+#
+	if (trstat_count > 0)
+		printf "trstat %d, sat %d %d %d %d %d %d %d %d\n", trstat_count, trstat_sat[0], trstat_sat[1], trstat_sat[2], trstat_sat[2], trstat_sat[3], trstat_sat[4], trstat_sat[5], trstat_sat[6], trstat_sat[7]
+#
+# osc summary data
+#
+# osc		record count
+# control	control midrange (V) +/- deviation (mV)
+# temp		oven temperature midrange +/- deviation (deg C)
+#
+	if (osc_count > 0)
+		printf "osc %d, control %.3f+/-%.3f, temp %.1f+/-%.2f\n", osc_count, (osc_vmax + osc_vmin) / 2, (osc_vmax - osc_vmin) / 2 * 1e3, (osc_tmax + osc_tmin) / 2, (osc_tmax - osc_tmin) / 2
+}
diff --git a/scripts/stats/dupe.awk b/scripts/stats/dupe.awk
new file mode 100755
index 0000000..317c2a4
--- /dev/null
+++ b/scripts/stats/dupe.awk
@@ -0,0 +1,8 @@
+#
+# delete duplicate lines
+#
+{
+	if (old != $0)
+		printf "%s\n", $0
+	old = $0
+}
diff --git a/scripts/stats/ensemble.S b/scripts/stats/ensemble.S
new file mode 100755
index 0000000..32a4dba
--- /dev/null
+++ b/scripts/stats/ensemble.S
@@ -0,0 +1,5 @@
+ensemble <- scan(file1, list(day=0, sec=0, gps=0, gpsw=0, loran=0, loranw=0, ensemble=0, std=0))
+str <- paste("eps/", file1, ".eps", sep="")
+postscript(str,  ,  ,  , 5, pointsize=18)
+par(mgp=c(1, 0, 0), tck = 0.03, mar = c(2, 2, 1, 1))
+plot(ensemble$sec, ensemble$ensemble, type="l", xlab=paste("MJD", ensemble$day, "Time (s)"), ylab="Ensemble Offset (ns)", ylim=c(-400, 400))
diff --git a/scripts/stats/ensemble.awk b/scripts/stats/ensemble.awk
new file mode 100755
index 0000000..136b33d
--- /dev/null
+++ b/scripts/stats/ensemble.awk
@@ -0,0 +1,17 @@
+# program to produce loran ensemble statistics from clockstats files
+#
+# usage: awk -f ensemble.awk clockstats
+#
+# format of input record (time values in seconds)
+# 49165 8.628 127.127.10.1 93:178:00:00:07.241 LORAN ENSEMBLE
+# -6.43E-08 +5.02E-08 .091 +5.98E-08 +1.59E-08 .909 +4.85E-08 +3.52E-08
+#
+# format of output record (time values in nanoseconds)
+#  MJD       sec     GPS    wgt    LORAN   wgt      avg   sigma
+# 49165     8.628   -64.3  0.091    59.8  0.909    48.5    35.2
+#
+# select LORAN ENSEMBLE records with valid format and weights
+{
+	if (NF >= 14 && $6 == "ENSEMBLE" && $9 > 0 && $12 > 0)
+		printf "%5s %9.3f %7.1f %6.3f %7.1f %6.3f %7.1f %7.1f\n", $1, $2, $7*1e9, $9, $10*1e9, $12, $13*1e9, $14*1e9
+}
diff --git a/scripts/stats/etf.S b/scripts/stats/etf.S
new file mode 100755
index 0000000..9b9c68b
--- /dev/null
+++ b/scripts/stats/etf.S
@@ -0,0 +1,15 @@
+options(digits=4)
+file2 <- "etf_summary"
+etf <- scan(file1, list(day=0, sec=0, offset=0, stab=0))
+r <- lsfit(etf$sec, etf$offset)
+count<-length(etf$sec)
+mean<-r$coef[[1]]
+std<-sqrt(var(r$residuals))
+slope<-r$coef[[2]] * 1000 
+cat("\n", file=file2 , append=TRUE, fill=FALSE, sep="")
+cat(file1, "\n", file=file2, append=TRUE, fill=FALSE, sep="")
+cat("etf1 ",  count, ", T ", mean, " ns, R ", slope, " ps/s, std ", std, " us\n", file=file2, append=TRUE, fill=FALSE, sep="")
+str <- paste("eps/", file1, ".eps", sep="")
+postscript(str,  ,  ,  , 5, pointsize=18)
+par(mgp=c(1, 0, 0), tck=0.03, mar=c(2, 2, 1, 1))
+plot(etf$sec, etf$offset, type="l", xlab=paste("MJD", etf$day, "Time (s)"), ylab="External Offset (ns)", ylim=c(-400, 400))
diff --git a/scripts/stats/etf.awk b/scripts/stats/etf.awk
new file mode 100755
index 0000000..8e6e334
--- /dev/null
+++ b/scripts/stats/etf.awk
@@ -0,0 +1,19 @@
+# program to produce external time/frequence statistics from clockstats files
+#
+# usage: awk -f etf.awk clockstats
+#
+# format of input record
+# 49165 40.473 127.127.10.1 93:178:00:00:39.238 ETF
+# +175.0 +176.8 2.0 +3.729E-11 +1.000E-10 +3.511E-11 4.005E-13 500
+#
+# format of output record (time values in nanoseconds)
+#  MJD      sec      time    freq
+# 49165    40.473   175.0  3.729e-11
+#
+# select ETF records with valid format
+{
+	if (NF >= 9 && $5 == "ETF") {
+		printf "%5s %9.3f %7.1f %10.3e\n", $1, $2, $6, $9
+	}
+}
+
diff --git a/scripts/stats/itf.S b/scripts/stats/itf.S
new file mode 100755
index 0000000..56c8c8d
--- /dev/null
+++ b/scripts/stats/itf.S
@@ -0,0 +1,5 @@
+itf <- scan(file1, list(day=0, sec=0, offset=0, stab=0))
+str <- paste("eps/", file1, ".eps", sep="")
+postscript(str,  ,  ,  , 5, pointsize=18)
+par(mgp=c(1, 0, 0), tck=0.03, mar=c(2, 2, 1, 1))
+plot(itf$sec, itf$offset, type="l", xlab=paste("MJD", itf$day, "Time (s)"), ylab="Internal Offset (ns)", ylim=c(-400, 400))
diff --git a/scripts/stats/itf.awk b/scripts/stats/itf.awk
new file mode 100755
index 0000000..2b21c5b
--- /dev/null
+++ b/scripts/stats/itf.awk
@@ -0,0 +1,19 @@
+# program to produce intewrnal time/frequence statistics from clockstats files
+#
+# usage: awk -f itf.awk clockstats
+#
+# format of input record
+# 49227 67.846 127.127.10.1 93:240:00:00:51.816 ITF
+# COCO 0 +2.0579E-07 -3.1037E-08 -7.7723E-11 +6.5455E-10 500.00 4.962819
+#
+# format of output record (time values in nanoseconds)
+#  MJD      sec      time        freq
+# 49227   67.846  +2.0579E-07  -7.7723E-11
+#
+# select ITF records with valid format
+{
+	if (NF >= 10 && $5 == "ITF") {
+		printf "%5s %9.3f %7.1f %10.3e\n", $1, $2, $8 * 1e9, $10
+	}
+}
+
diff --git a/scripts/stats/loop.S b/scripts/stats/loop.S
new file mode 100755
index 0000000..8e564b6
--- /dev/null
+++ b/scripts/stats/loop.S
@@ -0,0 +1,7 @@
+options(digits=4)
+loop <- scan(file1, list(day=0, sec=0, offset=0, freq=0, tc=0))
+loop$offset <- loop$offset * 1e6
+str <- paste("eps/", file1, ".eps", sep="")
+postscript(str,  ,  ,  , 5, pointsize=18)
+par(mgp=c(1, 0, 0), tck=0.03, mar=c(2, 2, 1, 1))
+plot(loop$sec, loop$offset, type="l", xlab=paste("MJD", loop$day, "Time (s)"), ylab="PLL Offset (us)", ylim=c(-400, 400))
diff --git a/scripts/stats/loop.awk b/scripts/stats/loop.awk
new file mode 100755
index 0000000..bac90db
--- /dev/null
+++ b/scripts/stats/loop.awk
@@ -0,0 +1,45 @@
+# awk program to scan loopstats files and report errors/statistics
+#
+# usage: awk -f loop.awk loopstats
+#
+# format of loopstats record
+#  MJD    sec   time (s)  freq (ppm)  poll
+# 49235  3.943  0.000016   22.4716    6
+#
+# format of output dataset (time values in milliseconds, freq in ppm)
+# loopstats.19960706
+# loop 1180, 0+/-11.0, rms 2.3, freq -24.45+/-0.045, var 0.019
+#
+BEGIN {
+	loop_tmax = loop_fmax = -1e9
+	loop_tmin = loop_fmin = 1e9
+}
+#
+# scan all records in file
+#
+{
+	if (NF >= 5) {
+		loop_count++
+		if ($3 > loop_tmax)
+			loop_tmax = $3
+		if ($3 < loop_tmin)
+			loop_tmin = $3
+		if ($4 > loop_fmax)
+			loop_fmax = $4
+		if ($4 < loop_fmin)
+			loop_fmin = $4
+		loop_time += $3
+		loop_time_rms += $3 * $3
+		loop_freq += $4
+		loop_freq_rms += $4 * $4
+	}
+} END {
+	if (loop_count > 0) {
+		loop_time /= loop_count
+                loop_time_rms = sqrt(loop_time_rms / loop_count - loop_time * loop_time)
+		loop_freq /= loop_count
+		loop_freq_rms = sqrt(loop_freq_rms / loop_count - loop_freq * loop_freq)
+		printf "loop %d, %.0f+/-%.1f, rms %.1f, freq %.2f+/-%0.3f, var %.3f\n", loop_count, (loop_tmax + loop_tmin) / 2 * 1e6, (loop_tmax - loop_tmin) / 2 * 1e6, loop_time_rms * 1e6, (loop_fmax + loop_fmin) / 2, (loop_fmax - loop_fmin) / 2, loop_freq_rms
+	}
+}
+
diff --git a/scripts/stats/loop_summary b/scripts/stats/loop_summary
new file mode 100755
index 0000000..35479ec
--- /dev/null
+++ b/scripts/stats/loop_summary
@@ -0,0 +1,2 @@
+ 
+loopstats.[1-9]
diff --git a/scripts/stats/peer.awk b/scripts/stats/peer.awk
new file mode 100755
index 0000000..5fe260e
--- /dev/null
+++ b/scripts/stats/peer.awk
@@ -0,0 +1,68 @@
+# awk program to scan peerstats files and report errors/statistics
+#
+# usage: awk -f peer.awk peerstats
+#
+# format of peerstats record
+#  MJD    sec    ident   stat  offset (s)  delay (s)  disp (s)
+# 49235 11.632 128.4.2.7 f414  -0.000041    0.21910   0.00084
+#
+# format of output dataset (time values in milliseconds)
+# peerstats.19960706
+#        ident     cnt     mean     rms      max     delay     dist     disp
+# ==========================================================================
+# 140.173.112.2     85   -0.509    1.345    4.606   80.417   49.260    1.092
+# 128.4.1.20      1364    0.058    0.364    4.465    3.712   10.540    1.101
+# 140.173.16.1    1415   -0.172    0.185    1.736    3.145    5.020    0.312
+#...
+#
+BEGIN {
+	n = 0
+	MAXDISTANCE = 1.0
+}
+#
+# scan all records in file
+#
+# we toss out all distances greater than one second on the assumption the
+# peer is in initial acquisition
+#
+{
+	if (NF >= 7 && ($7 + $6 / 2) < MAXDISTANCE) {
+		i = n
+		for (j = 0; j < n; j++) {
+			if ($3 == peer_ident[j])
+				i = j
+		}
+		if (i == n) {
+			peer_ident[i] = $3
+			peer_tmax[i] = peer_dist[i] = -1e9
+			peer_tmin[i] = 1e9
+			n++
+		}
+		peer_count[i]++
+		if ($5 > peer_tmax[i])
+			peer_tmax[i] = $5
+		if ($5 < peer_tmin[i])
+			peer_tmin[i] = $5
+		dist = $7 + $6 / 2
+		if (dist > peer_dist[i])
+			peer_dist[i] = dist
+		peer_time[i] += $5
+		peer_time_rms[i] += $5 * $5
+		peer_delay[i] += $6
+		peer_disp[i] +=  $7
+	}
+} END {
+	printf "       ident     cnt     mean     rms      max     delay     dist     disp\n"
+	printf "==========================================================================\n"
+	for (i = 0; i < n; i++) {
+		peer_time[i] /= peer_count[i]
+                peer_time_rms[i] = sqrt(peer_time_rms[i] / peer_count[i] - peer_time[i] * peer_time[i])
+		peer_delay[i] /= peer_count[i]
+		peer_disp[i] /= peer_count[i]
+		peer_tmax[i] = peer_tmax[i] - peer_time[i]
+		peer_tmin[i] = peer_time[i] - peer_tmin[i]
+		if (peer_tmin[i] > peer_tmax[i])
+			peer_tmax[i] = peer_tmin[i]
+		printf "%-15s%5d%9.3f%9.3f%9.3f%9.3f%9.3f%9.3f\n", peer_ident[i], peer_count[i], peer_time[i] * 1e3, peer_time_rms[i] * 1e3, peer_tmax[i] * 1e3, peer_delay[i] * 1e3, peer_dist[i] * 1e3, peer_disp[i] * 1e3
+	}
+}
diff --git a/scripts/stats/psummary.awk b/scripts/stats/psummary.awk
new file mode 100755
index 0000000..ec06b0c
--- /dev/null
+++ b/scripts/stats/psummary.awk
@@ -0,0 +1,82 @@
+# program to scan peer_summary file and produce summary of daily summaries
+#
+# usage: awk -f psummary.awk peer_summary
+#
+# format of input records
+# peerstats.19960706
+#        ident     cnt     mean     rms      max     delay     dist     disp
+# ==========================================================================
+# 140.173.112.2     85   -0.509    1.345    4.606   80.417   49.260    1.092
+# 128.4.1.20      1364    0.058    0.364    4.465    3.712   10.540    1.101
+# ...
+#
+# format of output records (actual data from rackety.udel.edu)
+#        host     days     mean       rms       max   >1  >5 >10 >50
+# ==================================================================
+# 127.127.22.1    1090     0.001     0.401    99.800  19  14  13  10
+# 127.0.0.1       1188     0.060     1.622   105.004  78  65  51  32
+# 127.127.4.1      586     0.000     0.000     0.000   0   0   0   0
+# 140.173.64.1     975    -0.010     2.552   257.595 399 192 114   8
+# 128.175.1.3     1121     0.447     8.637   204.123 479 460 397 147
+# 140.173.16.1    1106     0.027     1.014   267.857 242  38  31  23
+# 128.4.1.4       1119     0.023     1.037   267.748 223  41  34  23
+# 128.4.1.2        850     1.202     1.654   267.704 196  53  45  34
+# 128.4.1.20      1101     0.088     1.139   268.322 430 111  83  16
+# 140.173.32.1     979    -0.949     2.344   257.671 396 217 136   7
+# 140.173.112.2   1066     0.040     2.111   152.969 442 315 152  16
+# 140.173.80.1    1059     0.019     1.858    87.690 438 348 150   9
+# 140.173.96.1    1015     0.110     2.007   266.744 399 314 170  17
+# 140.173.128.1   1103    -0.002     2.600   257.672 465 262 132  13
+# 140.222.135.1    347    -4.626     8.804   196.394 135 135 134  95
+# 140.173.128.2   1081    -0.046     2.967   261.448 463 342 172  17
+# 140.222.141.1    354     0.820     8.809   195.333 142 141 139 100
+# 140.173.144.2   1058    -0.107     2.805   270.498 448 341 163  17
+# 140.222.134.1    354    -0.056     8.479   172.458 142 141 141 100
+# 140.222.144.1    415    -1.456     9.964   191.684 161 161 161 123
+# 140.222.136.1    234     0.902     7.707   182.431  62  62  62  48
+# 128.175.1.1      774     0.890     4.838   266.799 358 291 200  83
+# 127.127.10.1    1086    -0.002     1.462   231.128 240 239  60  57
+# 140.173.48.2     576     0.016     4.092   350.512 213 126  88  16
+# 128.4.1.11         3     0.000     0.000     0.000   0   0   0   0
+# 128.4.1.26       386    -1.363    20.251   341.284 164 164 161 132
+#
+# select table beginning with "ident"
+{
+	if (NF < 8 || $1 == "ident")
+		continue
+	i = n
+	for (j = 0; j < n; j++) {
+		if ($1 == peer_ident[j])
+			i = j
+	}
+	if (i == n) {
+		peer_ident[i] = $1
+		n++
+	}
+	peer_count[i]++
+	if (($7 - $6 / 2) < 400) {
+		peer_count[i]++
+		peer_mean[i] += $3
+		peer_var[i] += $4 * $4
+		if ($5 > peer_max[i])
+			peer_max[i] = $5
+		if ($5 > 1)
+			peer_1[i]++
+		if ($5 > 5)
+			peer_2[i]++
+		if ($5 > 10)
+			peer_3[i]++
+		if ($5 > 50)
+			peer_4[i]++
+	}
+} END {
+	printf "       host     days    mean       rms       max   >1  >5 >10 >50\n"
+	printf "==================================================================\n"
+	for (i = 0; i < n; i++) {
+		if (peer_count[i] <= 0)
+			continue
+		peer_mean[i] /= peer_count[i]
+		peer_var[i] = sqrt(peer_var[i] / peer_count[i])
+		printf "%-15s%4d%10.3f%10.3f%10.3f%4d%4d%4d%4d\n", peer_ident[i], peer_count[i], peer_mean[i], peer_var[i], peer_max[i], peer_1[i], peer_2[i], peer_3[i], peer_4[i]
+	}
+}
diff --git a/scripts/stats/summary.sh b/scripts/stats/summary.sh
new file mode 100755
index 0000000..dffdb0b
--- /dev/null
+++ b/scripts/stats/summary.sh
@@ -0,0 +1,88 @@
+#!/bin/sh
+#
+# Script to summarize ipeerstats, loopstats and clockstats files
+#
+# This script can be run from a cron job once per day, week or month. It
+# runs the file-specific summary script and appends the summary data to 
+# designated files.
+#
+DATE=`date +20%y%m%d`
+S=/usr/local/bin/S
+SIN=S.in
+SOUT=S.out
+LOOP=loop_summary
+PEER=peer_summary
+CLOCK=clock_summary
+
+rm -f $SIN $SOUT
+
+#
+# Summarize loopstats files
+#
+for f in loopstats.[12][0-9][0-9][0-9][0-1][0-9][0-3][0-9]; do
+	d=`echo $f | cut -f2 -d.`
+	if [ -f $f ] && [ $DATE != $d ]; then
+		echo " " >>$LOOP
+		echo $f >>$LOOP
+		awk -f loop.awk $f >>$LOOP
+		if [ -f $S ]; then
+			echo "file1<-"\"${f}\" >>$SIN
+			echo "source("\""loop.S"\"")" >>$SIN
+			echo "unix("\""rm ${f}"\"")" >>$SIN
+		else
+			rm -f $f
+		fi
+	fi
+done
+
+#
+# Summarize peerstats files
+#
+for f in peerstats.199[4-9][0-1][0-9][0-3][0-9]; do
+	d=`echo $f | cut -f2 -d.`
+	if [ -f $f ] && [ $DATE != $d ]; then
+		echo " " >>$PEER
+		echo $f >>$PEER
+		awk -f peer.awk $f >>$PEER
+		rm -f $f
+	fi
+done
+
+#
+# Summarize clockstats files
+#
+for f in clockstats.199[4-9][0-1][0-9][0-3][0-9]; do
+	d=`echo $f | cut -f2 -d.`
+	if [ -f $f ] && [ $DATE != $d ]; then
+		echo " " >>$CLOCK
+		echo $f >>$CLOCK
+		awk -f clock.awk $f >>$CLOCK
+		if [ -f /dev/gps[0-9] ]; then
+			awk -f itf.awk $f >itf.$d
+			awk -f etf.awk $f >etf.$d
+			awk -f ensemble.awk $f >ensemble.$d
+			awk -f tdata.awk $f >tdata.$d
+		fi
+		rm -f $f
+	fi
+done
+
+#
+# Process clockstat files with S and generate PostScript plots
+#
+for f in itf etf ensemble tdata; do
+	for d in ${f}.199[4-9][0-1][0-9][0-3][0-9]; do
+		if [ -f $d ]; then
+			if [ -f $S ]; then
+				echo "file1<-"\"${d}\" >>$SIN
+				echo "source("\"${f}.S\"")" >>$SIN
+				echo "unix("\""rm ${d}"\"")" >>$SIN
+			else
+				rm -f $d
+			fi
+		fi
+	done
+done
+if [ -f $SIN ]; then
+	$S BATCH $SIN $SOUT
+fi
diff --git a/scripts/stats/tdata.S b/scripts/stats/tdata.S
new file mode 100755
index 0000000..f360a24
--- /dev/null
+++ b/scripts/stats/tdata.S
@@ -0,0 +1,5 @@
+tdata <- scan(file1, list(day=0, sec=0, m=0, w=0, x=0, y=0, z=0))
+str <- paste("eps/", file1, ".eps", sep="")
+postscript(str,  ,  ,  , 5, pointsize=18)
+par(mgp=c(1, 0, 0), tck=0.03, mar=c(2, 2, 1, 1))
+plot(tdata$sec, tdata$m, type="l", xlab=paste("MJD", tdata$day, "Time (s)"), ylab="LORAN-M SNR (dB)")
diff --git a/scripts/stats/tdata.awk b/scripts/stats/tdata.awk
new file mode 100755
index 0000000..5be9c04
--- /dev/null
+++ b/scripts/stats/tdata.awk
@@ -0,0 +1,45 @@
+# program to produce loran tdata statistics from clockstats files
+#
+# usage: awk -f tdata.awk clockstats
+#
+# format of input record (missing replaced by -40.0)
+# 49228 36.852 127.127.10.1 93:241:00:00:20.812 LORAN TDATA
+# M OK 0 0 1169.14 -7.4 3.16E-07 .424
+# W CV 0 0 3329.30 -16.4 1.81E-06 
+# X OK 0 0 1737.19 -10.5 3.44E-07 .358
+# Y OK 0 0 2182.07 -9.0 4.41E-07 .218
+#
+# format of output record (time in nanoseconds, signal values in dB)
+#  MJD      sec      time     M      W      X      Y      Z
+# 49228    36.852   175.0   -7.4  -16.4  -10.5   -9.0
+#
+# select LORAN TDATA records with valid format
+{
+	if (NF >= 7 && $6 == "TDATA") {
+		m = w = x = y = z = -40.0
+		for (i = 7; i < NF - 5; i++) {
+			if ($i == "M" && $(i+1) == "OK") {
+				i += 5
+				m = $i
+			}
+			else if ($i == "W" && $(i+1) == "OK") {
+				i += 5
+				w = $i
+			}
+			else if ($i == "X" && $(i+1) == "OK") {
+				i += 5
+				x = $i
+			}
+			else if ($i == "Y" && $(i+1) == "OK") {
+				i += 5
+				y = $i
+			}
+			else if ($i == "Z" && $(i+1) == "OK") {
+				i += 5
+				z = $i
+			}
+                }
+		printf "%5s %9.3f %6.1f %6.1f %6.1f %6.1f %6.1f\n", $1, $2, m, w, x, y, z
+	}
+}
+
diff --git a/scripts/summary.in b/scripts/summary.in
new file mode 100644
index 0000000..515dfc6
--- /dev/null
+++ b/scripts/summary.in
@@ -0,0 +1,373 @@
+#! @PATH_PERL@ -w
+# $Id$
+# Perl version of (summary.sh, loop.awk, peer.awk):
+# Create summaries from xntpd's loop and peer statistics.
+#
+# Copyright (c) 1997, 1999 by Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+require 5.003; # "never tested with any other version of Perl"
+use strict;
+
+use Getopt::Long;
+
+my $log_date_pattern = '[12]\d{3}[01]\d[0-3]\d';
+my $statsdir = "/var/log/ntp";		# directory with input files
+my $outputdir = "/tmp";			# directory for output files
+my $skip_time_steps = 3600.0;		# ignore time offsets larger that this
+my $startdate = "19700101";		# first data file to use (YYYYMMDD)
+my $enddate=`date -u +%Y%m%d`; chomp $enddate; --$enddate;
+my $peer_dist_limit = 400.0;
+
+my %options = ("directory|input-directory=s" => \$statsdir,
+	       "output-directory=s" => \$outputdir,
+	       "skip-time-steps:f" => \$skip_time_steps,
+	       "start-date=s" => \$startdate,
+	       "end-date=s" => \$enddate,
+	       "peer-dist-limit=f" => \$peer_dist_limit);
+
+if ( !GetOptions(%options) )
+{
+    print STDERR "valid options for $0 are:\n";
+    my $opt;
+    foreach $opt (sort(keys %options)) {
+	print STDERR "\t--$opt\t(default is ";
+	if ( ref($options{$opt}) eq "ARRAY" ) {
+	    print STDERR join(", ",  map { "'$_'" } @{$options{$opt}});
+	} else {
+	    print STDERR "'${$options{$opt}}'";
+	}
+	print STDERR ")\n";
+    }
+    print STDERR "\n";
+    die;
+}
+
+# check possibly current values of options
+die "$statsdir: no such directory" unless (-d $statsdir);
+die "$outputdir: no such directory" unless (-d $outputdir);
+die "$skip_time_steps: skip-time-steps must be positive"
+    unless ($skip_time_steps >= 0.0);
+die "$startdate: invalid start date|$`|$&|$'"
+    unless ($startdate =~ m/.*$log_date_pattern$/);
+die "$enddate: invalid end date"
+    unless ($enddate =~ m/.*$log_date_pattern$/);
+
+$skip_time_steps = 0.128 if ($skip_time_steps == 0);
+
+sub min
+{
+    my ($result, @rest) = @_;
+    map { $result = $_ if ($_ < $result) } @rest;
+    return($result);
+}
+
+sub max
+{
+    my ($result, @rest) = @_;
+    map { $result = $_ if ($_ > $result) } @rest;
+    return($result);
+}
+
+# calculate mean, range, and standard deviation for offset and frequency
+sub do_loop
+{
+    my ($directory, $fname, $out_file) = @_;
+    print "$directory/$fname\n";
+    open INPUT, "$directory/$fname" or warn "can't open $directory/$fname: $!";
+    open OUTPUT, ">>$out_file" or die "can't open $out_file: $!";
+    print OUTPUT "$fname\n";
+    my ($loop_tmax, $loop_fmax) = (-1e9, -1e9);
+    my ($loop_tmin, $loop_fmin) = (1e9, 1e9);
+    my ($loop_time_rms, $loop_freq_rms) = (0, 0);
+    my $loop_count = 0;
+    my $loop_time = 0;
+    my $loop_freq = 0;
+    my ($freq, $offs);
+    my @Fld;
+    while (<INPUT>) {
+	chop;	# strip record separator
+	@Fld = split;
+	next if ($#Fld < 4);
+#NTPv3: 50529 74356.259 -0.000112 16.1230 8
+#NTPv3: day, sec.msec, offset, drift_comp, sys_poll
+#NTPv4: 51333 54734.582 0.000001648 16.981964 0.000001094 0.020938 6
+#NTPv4: day, sec.msec, offset, drift_comp, sys_error, clock_stabil, sys_poll
+	if ($Fld[2] > $skip_time_steps || $Fld[2] < -$skip_time_steps) {
+	    warn "ignoring loop offset $Fld[2] (file $fname, line $.)\n";
+	    next
+	}
+	$loop_count++;
+	($offs, $freq) = ($Fld[2], $Fld[3]);
+	$loop_tmax = max($loop_tmax, $offs);
+	$loop_tmin = min($loop_tmin, $offs);
+	$loop_fmax = max($loop_fmax, $freq);
+	$loop_fmin = min($loop_fmin, $freq);
+	$loop_time += $offs;
+	$loop_time_rms += $offs * $offs;
+	$loop_freq += $freq;
+	$loop_freq_rms += $freq * $freq;
+    }
+    close INPUT;
+    if ($loop_count > 1) {
+	$loop_time /= $loop_count;
+	$loop_time_rms = $loop_time_rms / $loop_count - $loop_time * $loop_time;
+	if ($loop_time_rms < 0) {
+	    warn "loop_time_rms: $loop_time_rms < 0";
+	    $loop_time_rms = 0;
+	}
+	$loop_time_rms = sqrt($loop_time_rms);
+	$loop_freq /= $loop_count;
+	$loop_freq_rms = $loop_freq_rms / $loop_count - $loop_freq * $loop_freq;
+	if ($loop_freq_rms < 0) {
+	    warn "loop_freq_rms: $loop_freq_rms < 0";
+	    $loop_freq_rms = 0;
+	}
+	$loop_freq_rms = sqrt($loop_freq_rms);
+	printf OUTPUT
+	    ("loop %d, %.0f+/-%.1f, rms %.1f, freq %.2f+/-%0.3f, var %.3f\n",
+	     $loop_count, ($loop_tmax + $loop_tmin) / 2 * 1e6,
+	     ($loop_tmax - $loop_tmin) / 2 * 1e6, $loop_time_rms * 1e6,
+	     ($loop_fmax + $loop_fmin) / 2, ($loop_fmax - $loop_fmin) / 2,
+	     $loop_freq_rms);
+    }
+    else {
+	warn "no valid lines in $directory/$fname";
+    }
+    close OUTPUT
+}
+
+# calculate mean, standard deviation, maximum offset, mean dispersion,
+# and maximum distance for each peer
+sub do_peer
+{
+    my ($directory, $fname, $out_file) = @_;
+    print "$directory/$fname\n";
+    open INPUT, "$directory/$fname" or warn "can't open $directory/$fname: $!";
+    open OUTPUT, ">>$out_file" or die "can't open $out_file: $!";
+    print OUTPUT "$fname\n";
+# we toss out all distances greater than one second on the assumption the
+# peer is in initial acquisition
+    my ($n, $MAXDISTANCE) = (0, 1.0);
+    my %peer_time;
+    my %peer_time_rms;
+    my %peer_count;
+    my %peer_delay;
+    my %peer_disp;
+    my %peer_dist;
+    my %peer_ident;
+    my %peer_tmin;
+    my %peer_tmax;
+    my @Fld;
+    my ($i, $j);
+    my ($dist, $offs);
+    while (<INPUT>) {
+	chop;	# strip record separator
+	@Fld = split;
+	next if ($#Fld < 6);
+#NTPv3: 50529 83316.249 127.127.8.1 9674 0.008628 0.00000 0.00700
+#NTPv3: day, sec.msec, addr, status, offset, delay, dispersion
+#NTPv4: 51333 56042.037 127.127.8.1 94f5 -0.000014657 0.000000000 0.000000000 0.000013214
+#NTPv4: day, sec.msec, addr, status, offset, delay, dispersion, skew
+
+	$dist = $Fld[6] + $Fld[5] / 2;
+	next if ($dist > $MAXDISTANCE);
+	$offs = $Fld[4];
+	if ($offs > $skip_time_steps || $offs < -$skip_time_steps) {
+	    warn "ignoring peer offset $offs (file $fname, line $.)\n";
+	    next
+	}
+	$i = $n;
+	for ($j = 0; $j < $n; $j++) {
+	    if ($Fld[2] eq $peer_ident{$j}) {
+		$i = $j;		# peer found
+		last;
+	    }
+	}
+	if ($i == $n) {		# add new peer
+	    $peer_ident{$i} = $Fld[2];
+	    $peer_tmax{$i} = $peer_dist{$i} = -1e9;
+	    $peer_tmin{$i} = 1e9;
+	    $peer_time{$i} = $peer_time_rms{$i} = 0;
+	    $peer_delay{$i} = $peer_disp{$i} = 0;
+	    $peer_count{$i} = 0;
+	    $n++;
+	}
+	$peer_count{$i}++;
+	$peer_tmax{$i} = max($peer_tmax{$i}, $offs);
+	$peer_tmin{$i} = min($peer_tmin{$i}, $offs);
+	$peer_dist{$i} = max($peer_dist{$i}, $dist);
+	$peer_time{$i} += $offs;
+	$peer_time_rms{$i} += $offs * $offs;
+	$peer_delay{$i} += $Fld[5];
+	$peer_disp{$i} += $Fld[6];
+    }
+    close INPUT;
+    print OUTPUT
+"       ident     cnt     mean     rms      max     delay     dist     disp\n";
+    print OUTPUT
+"==========================================================================\n";
+    my @lines = ();
+    for ($i = 0; $i < $n; $i++) {
+	next if $peer_count{$i} < 2;
+	$peer_time{$i} /= $peer_count{$i};
+	eval { $peer_time_rms{$i} = sqrt($peer_time_rms{$i} / $peer_count{$i} -
+					 $peer_time{$i} * $peer_time{$i}); };
+	$peer_time_rms{$i} = 0, warn $@ if $@;
+	$peer_delay{$i} /= $peer_count{$i};
+	$peer_disp{$i} /= $peer_count{$i};
+	$peer_tmax{$i} = $peer_tmax{$i} - $peer_time{$i};
+	$peer_tmin{$i} = $peer_time{$i} - $peer_tmin{$i};
+	if ($peer_tmin{$i} > $peer_tmax{$i}) {	# can this happen at all?
+	    $peer_tmax{$i} = $peer_tmin{$i};
+	}
+	push @lines, sprintf
+	    "%-15s %4d %8.3f %8.3f %8.3f %8.3f %8.3f %8.3f\n",
+	    $peer_ident{$i}, $peer_count{$i}, $peer_time{$i} * 1e3,
+	    $peer_time_rms{$i} * 1e3, $peer_tmax{$i} * 1e3,
+	    $peer_delay{$i} * 1e3, $peer_dist{$i} * 1e3, $peer_disp{$i} * 1e3;
+    }
+    print OUTPUT sort @lines;
+    close OUTPUT;
+}
+
+sub do_clock
+{
+    my ($directory, $fname, $out_file) = @_;
+    print "$directory/$fname\n";
+    open INPUT, "$directory/$fname";
+    open OUTPUT, ">>$out_file" or die "can't open $out_file: $!";
+    print OUTPUT "$fname\n";
+    close INPUT;
+    close OUTPUT;
+}
+
+sub peer_summary
+{
+    my $in_file = shift;
+    my ($i, $j, $n);
+    my (%peer_ident, %peer_count, %peer_mean, %peer_var, %peer_max);
+    my (%peer_1, %peer_2, %peer_3, %peer_4);
+    my $dist;
+    my $max;
+    open INPUT, "<$in_file" or die "can't open $in_file: $!";
+    my @Fld;
+    $n = 0;
+    while (<INPUT>) {
+	chop;	# strip record separator
+	@Fld = split;
+	next if ($#Fld < 7 || $Fld[0] eq 'ident');
+	$i = $n;
+	for ($j = 0; $j < $n; $j++) {
+	    if ($Fld[0] eq $peer_ident{$j}) {
+		$i = $j;
+		last;			# peer found
+	    }
+	}
+	if ($i == $n) {			# add new peer
+	    $peer_count{$i} = $peer_mean{$i} = $peer_var{$i} = 0;
+	    $peer_max{$i} = 0;
+ 	    $peer_1{$i} = $peer_2{$i} = $peer_3{$i} = $peer_4{$i} = 0;
+	    $peer_ident{$i} = $Fld[0];
+	    ++$n;
+	}
+	$dist = $Fld[6] - $Fld[5] / 2;
+	if ($dist < $peer_dist_limit) {
+	    $peer_count{$i}++;
+	    $peer_mean{$i} += $Fld[2];
+	    $peer_var{$i} += $Fld[3] * $Fld[3];
+	    $max = $Fld[4];
+	    $peer_max{$i} = max($peer_max{$i}, $max);
+	    if ($max > 1) {
+		$peer_1{$i}++;
+		if ($max > 5) {
+		    $peer_2{$i}++;
+		    if ($max > 10) {
+			$peer_3{$i}++;
+			if ($max > 50) {
+			    $peer_4{$i}++;
+			}
+		    }
+		}
+	    }
+	}
+	else {
+	    warn "dist exceeds limit: $dist (file $in_file, line $.)\n";
+	}
+    }
+    close INPUT;
+    my @lines = ();
+    print
+	"       host     days    mean       rms       max   >1  >5 >10 >50\n";
+    print
+	"==================================================================\n";
+    for ($i = 0; $i < $n; $i++) {
+	next if ($peer_count{$i} < 2);
+	$peer_mean{$i} /= $peer_count{$i};
+	eval { $peer_var{$i} = sqrt($peer_var{$i} / $peer_count{$i} -
+				    $peer_mean{$i} * $peer_mean{$i}); };
+	$peer_var{$i} = 0, warn $@ if $@;
+	push @lines, sprintf
+	    "%-15s %3d %9.3f% 9.3f %9.3f %3d %3d %3d %3d\n",
+	    $peer_ident{$i}, $peer_count{$i}, $peer_mean{$i}, $peer_var{$i},
+	    $peer_max{$i}, $peer_1{$i}, $peer_2{$i}, $peer_3{$i}, $peer_4{$i};
+    }
+    print sort @lines;
+}
+
+my $loop_summary="$outputdir/loop_summary";
+my $peer_summary="$outputdir/peer_summary";
+my $clock_summary="$outputdir/clock_summary";
+my (@loopfiles, @peerfiles, @clockfiles);
+
+print STDERR "Creating summaries from $statsdir ($startdate to $enddate)\n";
+
+opendir SDIR, $statsdir or die "directory ${statsdir}: $!";
+rewinddir SDIR;
+@loopfiles=sort grep /loop.*$log_date_pattern/, readdir SDIR;
+rewinddir SDIR;
+@peerfiles=sort grep /peer.*$log_date_pattern/, readdir SDIR;
+rewinddir SDIR;
+@clockfiles=sort grep /clock.*$log_date_pattern/, readdir SDIR;
+closedir SDIR;
+
+# remove old summary files
+map { unlink $_ if -f $_ } ($loop_summary, $peer_summary, $clock_summary);
+
+my $date;
+map {
+    $date = $_; $date =~ s/.*($log_date_pattern)$/$1/;
+    if ($date ge $startdate && $date le $enddate) {
+	do_loop $statsdir, $_, $loop_summary;
+    }
+} @loopfiles;
+
+map {
+    $date = $_; $date =~ s/.*($log_date_pattern)$/$1/;
+    if ($date ge $startdate && $date le $enddate) {
+	do_peer $statsdir, $_, $peer_summary;
+    }
+} @peerfiles;
+
+map {
+    $date = $_; $date =~ s/.*($log_date_pattern)$/$1/;
+    if ($date ge $startdate && $date le $enddate) {
+	do_clock $statsdir, $_, $clock_summary;
+    }
+} @clockfiles;
+
+print STDERR "Creating peer summary with limit $peer_dist_limit\n";
+peer_summary $peer_summary if (-f $peer_summary);
diff --git a/scripts/support/README b/scripts/support/README
new file mode 100644
index 0000000..812965b
--- /dev/null
+++ b/scripts/support/README
@@ -0,0 +1,73 @@
+The bin and etc directories contain several scripts (sh and perl) that
+should ease startup and configuration of NTP sites.
+
+	bin/monl is a monitoring script that prints out new, current and
+	         old customers of an NTP timeserver when monitoring is
+		 in effect.
+		 monl has following options:
+		 -i <regexp> (regular expression matchin IP addres to be ignored
+		 -d <directory> where the current state is kept (default /tmp)
+		 -v debug output
+		 -n do not translate IP addresses into hostnames
+		 <host> host to be analyzed
+
+		 monl uses xntpdc for information gathering and is thus
+		 limited to the NTP version xntpdc is compiled for.
+
+	bin/mvstats moves compresses and removes statistics files (useful mainly
+		    for reference servers
+
+	etc/install creates the locally needed directories for NTP (if not residung in /etc)
+
+	etc/rc   starts up daemon with configuration file and key file
+	etc/cron cron called monitor statistic (uses bin/monl)
+	etc/crontab crontab prototype for reference time servers
+	etc/setup   sh script sourced by the other scripts for variable setup
+
+YOU MUST EDIT THESE FILES TO REFLECT YOUR LOCAL SETUP !
+
+READ THIS BEFORE USING THE STARTUP SCRIPTS
+
+The startupscript etc/rc has been written for Suns and HPs. They are not 
+guaranteed to work elsewhere. Following assumptions have been made:
+
+	All NTP related files reside in ONE directory having following structure:
+
+		bin/*	-	all executables (daemon, control, date, scripts)
+		etc/*	-	startup scripts and cron scripts
+		conf/*	-	NTP configuration files
+
+The variable NTPROOT (etc/rc, etc/install) must be edited to reflect 
+the NTP directory (e.g. /usr/local/NTP)
+
+NTP config files are located via Suns arch command and have the name
+conf/`arch`.`arch -k`.
+These are the default configurations (usually clients). If a file with the name
+conf/`arch`.`arch -k`.`hostname` is present this file will be preferred (Reference host,
+gateway). If the arch command is not available no-arch is used. The arch command
+is usually a shell script which echoes a string unique the the current machine
+architecture.
+
+The tickadj command has its own conf/tickconf file which is used to set host
+specific tickadj values. The line with DEFAULT specifies the default tickadj
+parameters, all other lines consists of <hostname> <hostid>
+<tickadj parameters>. These lines need only be entered if the specified host
+needs parameters different from the default parameters.
+
+Reference clock support is provided for DCF77. If you need to initialize
+certain things for reference clock support (e.g. loading STREAMS modules),
+you need to edit etc/rc.
+
+The current config files of Erlangen are included in the conf directory.
+They are just for reference, but might help you a bit in setting up a
+synchronisation network.
+
+The advantage of keeping all config files centralized is the easier 
+administration.
+
+We replicate the NTP directory via NFS and rdist.
+
+When you have set up the local config files (YOUR OWN!) you can call 
+<NTPROOT>/etc/rc for daemon startup.
+
+For more information: time@informatik.uni-erlangen.de
diff --git a/scripts/support/bin/monl b/scripts/support/bin/monl
new file mode 100644
index 0000000..f0c48db
--- /dev/null
+++ b/scripts/support/bin/monl
@@ -0,0 +1,213 @@
+#!/local/bin/perl
+
+%service = ( 0, "unspec",
+	     1, "Active",
+	     2, "Passive",
+	     3, "Client",
+	     4, "Server",
+	     5, "Broadcast",
+	     6, "Control",
+	     7, "Private" );
+%nc = ();
+@ignpat = ();
+$noname = 0;
+$verbose = 0;
+$retries = 5;
+$lastkey = 0;
+
+sub timedelta {
+  local($tm, $days, $h, $m, $s);
+
+  $tm = @_[$[];
+  $days = 0;
+  $days = sprintf("%dd+", $days) if $days = int($tm / (60*60*24));
+  $days = "" unless $days;
+  $tm = $tm % (60*60*24);
+  $h  = int($tm / (60*60));
+  $tm = $tm % (60*60);
+  $m  = int($tm / 60);
+  $s  = $tm % 60;
+
+  return sprintf("%s%02d:%02d:%02d", $days, $h, $m, $s);
+}
+
+sub listentry {
+  local($host, $mode) = split("$;" , @_[$[]);
+  local($count, $version, $firsttime) = split("$;" , $_[$[+1]);
+  local($name);
+
+  if (grep($host =~ m/$_/, @ignpat))
+    {
+      print "ignored $host ...\n" if $verbose;
+      return;
+    }
+
+  return if ! $count;
+
+  if (defined($nc{$host}))
+    {
+      $name = $nc{$host};
+    }
+  else
+    {
+      if ($noname)
+	{
+	  $nc{$host} = $name = $host;
+	}
+      else
+	{
+	  $name = (gethostbyaddr(pack("C4", split(/\./, $host)), 2))[$[];
+	  $nc{$host} = $name = $host if ! defined($name);
+	}
+    }
+
+  printf ($fmt, ($lastkey eq $host) ? "" : $name, $service{$mode}, $count, $version, &timedelta($firsttime), $firsttime / $count);
+
+  if (@_[$[+2])
+    {
+      $hostcnt++ if $lastkey ne $host;
+      $packcnt += $count;
+      $maxtime = $firsttime if $firsttime > $maxtime;
+    }
+
+  $lastkey = $host;
+}
+
+while ($ARGV[$[] =~ /^-[nvid]$/)
+  {
+    if ($ARGV[$[] eq "-i")
+      {
+	shift;
+	push(@ignpat, shift) unless ! defined($ARGV[$[]);
+      }
+    elsif ($ARGV[$[] eq "-d")
+      {
+	shift;
+	$dir = shift unless ! defined($ARGV[$[]);
+      }
+    elsif ($ARGV[$[] eq "-n")
+      {
+	shift;
+	$noname = 1;
+      }
+    elsif ($ARGV[$[] eq "-v")
+      {
+	shift;
+	$verbose = 1;
+      }
+  }
+
+$dir     = "/tmp" unless defined($dir);
+$gone     = 60*60*48;
+$fmt = "%48s %10s %7d %7d %13s %14.3f\n";
+$sfmt = "%48s %10s %7s %7s %13s %14s\n";
+@lbl = ("Host", "Mode", "Count", "Version", "Time active", "Packetinterval");
+
+if (!defined($ARGV[$[]))
+  {
+    $hostname = `hostname`;
+    chop($hostname);
+    unshift(@ARGV, $hostname);
+  }
+
+foreach $hostname (@ARGV)
+  {
+    $dbmfile = $dir . "/monlstats-" . $hostname;
+    $monl = "xntpdc -c 'hostnames no' -c monl $hostname | tail +3 |";
+    $hostcnt = 0;
+    $packcnt = 0;
+    $maxtime = 0;
+    %Seen = ();
+    %New = ();
+    %Old = ();
+
+    print "Monitor Status of $hostname\n\n";
+
+    $cnt = $retries;
+    do
+      {
+	open(MONL, $monl) || die("$monl failed $!");
+	@monlout = <MONL>;
+	close(MONL);
+      } while (! @monlout && $cnt--);
+
+    if (! @monlout)
+      {
+	print "not available.\n";
+	next;
+      }
+
+    dbmopen(Clients, $dbmfile, 0644) || die("dbmopen(.., $dbmfile, ...): $!");
+
+    foreach (@monlout)
+    {
+      chop;
+      split;
+      ($host, $count, $mode, $version, $lasttime, $firsttime) =
+	  (@_[$[, $[+2 .. $[+4, $#_-1,$#_]);
+      
+      $Seen{$host, $mode} = 1;
+
+      if (!defined($Clients{$host, $mode}))
+	{
+	  if ($lasttime <= $gone)
+	    {
+	      ## got a new one
+	      $Clients{$host, $mode} = $New{$host, $mode} = join("$;", $count, $version, $firsttime, $lasttime);
+	    }
+	}
+      else
+	{
+	  ## throw out the old ones
+	  if ($lasttime > $gone)
+	    {
+	      $Old{$host, $mode} = $Clients{$host, $mode};
+	      delete $Clients{$host, $mode};
+	    }
+	  else
+	    {
+	      $Clients{$host, $mode} = join("$;", $count, $version, $firsttime, $lasttime);
+	    }
+	}
+    }
+
+    grep(($Seen{$_} || ($Old{$_} = delete $Clients{$_})), keys(%Clients));
+
+    if (grep(($tmp = $_ , !grep($tmp =~ m/$_/, @ignpat)), keys(%New)))
+      {
+	print "New customers\n";
+	print "-------------\n";
+	printf $sfmt, @lbl;
+	grep( &listentry($_, $New{$_}, 1), sort(keys(%New)) );
+	print "\n";
+      }
+
+  
+    if (grep((!defined($New{$_}) && ($tmp = $_, !grep($tmp =~ m/$_/, @ignpat))), keys(%Clients)))
+      {
+	print "Current customers\n";
+	print "-----------------\n";
+	printf $sfmt, @lbl;
+	grep( defined($New{$_}) || &listentry($_, $Clients{$_}, 1) , sort(keys(%Clients)) );
+	print "\n";
+      }
+
+    if (grep(($tmp = $_, !grep($tmp =~ m/$_/, @ignpat)), keys(%Old)))
+      {
+	print "Discarded customers\n";
+	print "-------------------\n";
+	printf $sfmt, @lbl;
+	grep( &listentry($_, $Old{$_}, 0) , sort(keys(%Old)) );
+	print "\n";
+      }
+
+    dbmclose(Clients);
+
+    print "\nSummary:\n";
+    print "--------\n";
+    printf("Elapsed time: %13s\n", &timedelta($maxtime));
+    printf("       Hosts: %13d\n", $hostcnt);
+    printf("     Packets: %13d\n", $packcnt);
+    printf("        Rate: %13.2f\n", $packcnt / $maxtime) if $maxtime;
+    print "\n";
+  }
diff --git a/scripts/support/bin/mvstats b/scripts/support/bin/mvstats
new file mode 100644
index 0000000..e33dc792
--- /dev/null
+++ b/scripts/support/bin/mvstats
@@ -0,0 +1,23 @@
+#!/bin/sh
+#
+# mvstats,v 3.1 1993/07/06 01:10:24 jbj Exp
+#
+# mvstats is called by cron for keeping the log files together
+# usually only used on reference hosts
+#
+# Files reside in /var/NTP
+# Files older than 2 days will be compressed,
+# Files older than 64 days will be removed.
+#
+# mvstats,v
+# Revision 3.1  1993/07/06  01:10:24  jbj
+# XNTP release 3.1
+#
+#
+# Revision 1.1  1992/12/10  12:58:24  kardel
+# Prerelease NTP V3 / DCF
+#
+#
+cd /var/NTP
+find . ! -name '*.Z' -mtime +2 -exec compress -f {} \;
+find . -mtime +64 -exec rm -f {} \;
diff --git a/scripts/support/conf/hp300.hp300 b/scripts/support/conf/hp300.hp300
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/hp300.hp300
diff --git a/scripts/support/conf/hp700.hp700 b/scripts/support/conf/hp700.hp700
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/hp700.hp700
diff --git a/scripts/support/conf/hp700.hp700.faui47 b/scripts/support/conf/hp700.hp700.faui47
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/hp700.hp700.faui47
diff --git a/scripts/support/conf/hp800.hp800 b/scripts/support/conf/hp800.hp800
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/hp800.hp800
diff --git a/scripts/support/conf/ntp.conf b/scripts/support/conf/ntp.conf
new file mode 100644
index 0000000..2d6bb85
--- /dev/null
+++ b/scripts/support/conf/ntp.conf
@@ -0,0 +1,3 @@
+#
+# put your default configuration (e.g. broadcastclient) in here
+#
diff --git a/scripts/support/conf/sun3.sun3 b/scripts/support/conf/sun3.sun3
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/sun3.sun3
diff --git a/scripts/support/conf/sun4.sun4.faui01 b/scripts/support/conf/sun4.sun4.faui01
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/sun4.sun4.faui01
diff --git a/scripts/support/conf/sun4.sun4.faui10 b/scripts/support/conf/sun4.sun4.faui10
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/sun4.sun4.faui10
diff --git a/scripts/support/conf/sun4.sun4.faui45 b/scripts/support/conf/sun4.sun4.faui45
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/sun4.sun4.faui45
diff --git a/scripts/support/conf/sun4.sun4c b/scripts/support/conf/sun4.sun4c
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/sun4.sun4c
diff --git a/scripts/support/conf/sun4.sun4c.Lucifer b/scripts/support/conf/sun4.sun4c.Lucifer
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/sun4.sun4c.Lucifer
diff --git a/scripts/support/conf/sun4.sun4m b/scripts/support/conf/sun4.sun4m
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/sun4.sun4m
diff --git a/scripts/support/conf/sun4.sun4m.faui42 b/scripts/support/conf/sun4.sun4m.faui42
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/sun4.sun4m.faui42
diff --git a/scripts/support/conf/sun4.sun4m.faui45m b/scripts/support/conf/sun4.sun4m.faui45m
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/support/conf/sun4.sun4m.faui45m
diff --git a/scripts/support/conf/tickconf b/scripts/support/conf/tickconf
new file mode 100644
index 0000000..b17dbe8
--- /dev/null
+++ b/scripts/support/conf/tickconf
@@ -0,0 +1,19 @@
+DEFAULT -A -p -s -q
+Lucifer 55406cfa -a 1 -p -s -q -t 10001
+faui45  24000f9b -a 1 -p -s -q
+faui10  2440213c -a 1 -p -s -q
+faui1b  54001418 -A -p -s -q -t 10001
+faui4p  5100344d -A -p -s -q -t 9999
+faui02g 1200be20 -A -p -s -q -t 9999
+faui02e 1200bbab -A -p -s -q -t 9999
+faui02f 1200bedb -A -p -s -q -t 9999
+faui03b 1200b92b -A -p -s -q -t 9999
+faui45m 726001ac -A -p -s -q -t 10001
+faui45o 72600272 -A -p -s -q -t 10001
+faui45p 7260028f -A -p -s -q -t 10001
+faui45r 72400cc7 -A -p -s -q -t 10001
+faui45s 726045be -A -p -s -q -t 10001
+faui45v 72604487 -A -p -s -q -t 10001
+faui45x 726044eb -A -p -s -q -t 10001
+faui45y 7260476d -A -p -s -q -t 10001
+faui45z 726045a1 -A -p -s -q -t 10001
diff --git a/scripts/support/etc/cron b/scripts/support/etc/cron
new file mode 100644
index 0000000..07ed189
--- /dev/null
+++ b/scripts/support/etc/cron
@@ -0,0 +1,18 @@
+#!/bin/sh
+#
+# cron,v 3.1 1993/07/06 01:10:50 jbj Exp
+#
+# called by cron for statistics gathering
+#
+# cron,v
+# Revision 3.1  1993/07/06  01:10:50  jbj
+# XNTP release 3.1
+#
+#
+# Revision 1.1  1992/12/10  12:59:18  kardel
+# Prerelease NTP V3 / DCF
+#
+#
+PATH="${PATH}:/local/NTP/bin"
+export PATH
+monl -d /local/NTP/monitor -i '127\.0\.0\.1' faui10 faui45 lucifer rackety.udel.edu
diff --git a/scripts/support/etc/crontab b/scripts/support/etc/crontab
new file mode 100644
index 0000000..2b2d19c
--- /dev/null
+++ b/scripts/support/etc/crontab
@@ -0,0 +1,8 @@
+#
+# NTP statistics periodic cleanup - REFERENCE SERVER ONLY
+#
+#55      23      *       *       * sh /local/NTP/etc/mvstats
+#
+# gather NTP client statistics - REFERENCE SERVER ONLY
+#
+0	8,18	*	*	*	/local/NTP/etc/cron 2>/dev/null | /usr/ucb/mail -s "NTP statistics" time@informatik.uni-erlangen.de
diff --git a/scripts/support/etc/install b/scripts/support/etc/install
new file mode 100644
index 0000000..169a7e5
--- /dev/null
+++ b/scripts/support/etc/install
@@ -0,0 +1,67 @@
+#!/bin/sh
+#
+# install,v 3.1 1993/07/06 01:10:53 jbj Exp
+#
+# install,v
+# Revision 3.1  1993/07/06  01:10:53  jbj
+# XNTP release 3.1
+#
+#
+# Revision 1.1  1992/12/10  12:59:21  kardel
+# Prerelease NTP V3 / DCF
+#
+# Revision 1.1  1992/06/18  14:50:08  kardel
+# Initial revision
+#
+#
+NTPROOT=/local/NTP		# SITE SPECIFIC: where NTP resides
+#
+# where the local NTP state files reside (xntp.drift) ussualle /etc
+# this directory must not be shared as machine dependent data ist stored there
+#
+NTPDIR="/+private/local/NTP"
+#
+# get the initial setup
+#
+if [ ! -r $NTPROOT/etc/setup ]; then
+	echo "ERROR: $NTPROOT/etc/setup missing - incorrect installation."
+	exit 1
+else
+	. $NTPROOT/etc/setup
+fi
+
+umask 022                           # SITE SPECIFIC: local policy - watch out for NFS and "root" rights
+
+Mkdir() {
+  p=""
+  IFS="/"
+  set -- $@
+  IFS=' 	
+'
+  for pnc do
+    if [ ! -d "$p/$pnc" ]; then
+      ECHO -n "creating directory $p/$pnc"
+      if mkdir "$p/$pnc"; then
+	ECHO ""
+      else
+	ECHO " - FAILED"
+	break;
+      fi
+    fi
+    p="$p/$pnc"
+  done
+}
+
+if [ ! -d "$NTPDIR" ]; then
+  ECHO "installing NTP private data area ($NTPDIR)"
+  if Mkdir "$NTPDIR"; then
+    chmod 755 "$NTPDIR"
+    ECHO "$NTPDIR created."
+  fi
+else
+  ECHO "NTP already installed."
+  if [ -f "$NTPDIR/xntp.drift" ]; then
+    ECHO "currently saved drift value:" `cat "$NTPDIR/xntp.drift"`
+  fi
+fi
+
diff --git a/scripts/support/etc/rc b/scripts/support/etc/rc
new file mode 100644
index 0000000..ef8834a
--- /dev/null
+++ b/scripts/support/etc/rc
@@ -0,0 +1,198 @@
+#!/bin/sh
+# NTP time synchronisation
+#
+# /src/NTP/REPOSITORY/v3/supportscripts/etc/rc,v 1.11 1993/07/09 13:17:00 kardel Exp
+#
+# rc,v
+# Revision 1.11  1993/07/09  13:17:00  kardel
+# local NTPROOT
+#
+# Revision 1.10  1993/07/09  11:37:29  kardel
+# Initial restructured version + GPS support
+#
+# Revision 1.9  1993/06/23  14:10:36  kardel
+# June 21st reconcilation
+#
+# Revision 1.7  1993/06/02  12:04:43  kardel
+# May 28th reconcilation & clenaup
+#
+#
+# non reference clock hosts will try to do an ntpdate on NTPSERVERS
+#
+NTPSERVERS="ntps1-0 ntps1-1 ntps2-0 ntps2-1"
+NTPROOT=/local/NTP
+
+#
+# get the initial setup
+#
+if [ ! -r $NTPROOT/etc/setup ]; then
+	echo "ERROR: $NTPROOT/etc/setup missing - incorrect installation."
+	exit 1
+else
+	. $NTPROOT/etc/setup
+fi
+
+umask 022                           # SITE SPECIFIC: local policy - watch out for NFS and "root" rights
+
+msg=""
+#
+# default configuration files are named $NTPROOT/conf/<ARCH>.<KARCH>
+#
+CF=$NTPROOT/conf/$ARCH.$KARCH     # default configuration file
+#
+# Host specific config file (reference clocks) have the hostname tagged on
+#
+CFH="$CF"."$HOSTNAME"             # specific configuration file
+#
+# where to find the tickadj command
+#
+KFIX=$NTPROOT/bin/tickadj         # kernel variable fix
+#
+# where to find special tickadj parameters
+#
+TC=$NTPROOT/conf/tickconf         # special tickadj parameters
+#
+# where to find the keys file (if not found $KEY.dumb will be used)
+#
+KEY=$NTPROOT/conf/ntp.keys        # private key file
+#
+# the daemon
+#
+XD=$NTPROOT/bin/xntpd             # NTP daemon
+#
+# HP adjtimed
+#
+ADJTIMED=$NTPROOT/bin/adjtimed    # HP special (adjtime() emulation)
+#
+# ntpdate command
+#
+NTPDATE=$NTPROOT/bin/ntpdate
+
+#
+# secondary timed support
+# The word "TIMED" must be in the config file for timed to start
+# Note that this times is a special version which does not ever set or
+# adjust the time. Ask time@informatik.uni-erlangen.de for patches
+#
+TIMED=$NTPROOT/bin/timed	  # timed (Berkeley) secondary time service
+				  # here used in a *HARMLESS* version
+				  # to provide time to "inferior" systems
+#
+# ISREFHOST is a command that returns exit status 0 for a reference host
+# Site specific: sample for dcf77 is given
+#
+ISREFHOST="[ -f $NTPROOT/.karch.$KARCH/sys/OBJ/parsestreams.o -a -f /dev/refclock-0 ]"
+#
+# SETUP_REFCLOCK
+#
+# what to do in order to set up a local reference clock
+# usually this will load a STREAMS module or initialize other things
+# needed
+#
+SETUP_REFCLOCK() {
+  if modstat | grep -s 'PARSE'; then
+	  ECHO "loadable PARSER STREAMS module already loaded."
+  else
+	  ECHO "attempting to load PARSER STREAMS module..."
+	  MDLFILE="/tmp/mdl.$$"
+	  if modload $NTPROOT/.karch.$KARCH/sys/OBJ/parsestreams.o -o $MDLFILE 2>&1; then
+	    modstat
+	  else
+	    echo WARNING: load FAILED
+	  fi | LOG
+	  rm -f $MDLFILE
+	  unset MDLFILE
+  fi
+}
+
+kargs() {
+  MATCH=NO
+  HOSTID="`(hostid) 2>/dev/null || echo 000000`"
+  if [ -r "$TC" ]; then
+    exec 0< "$TC"
+    while [ "$MATCH" != "YES" ] && read HOST ID PARAM; do
+      if [ "$HOST" = "DEFAULT" ]; then
+	DEFAULT="$ID $PARAM"
+      else
+	if [ "$ID" = "$HOSTID" -o "$HOST" = "$HOSTNAME" ]; then
+	  echo "$PARAM"
+	  MATCH=YES
+	fi
+      fi
+    done
+    if [ "$MATCH" != "YES" ]; then
+      if [ -z "$DEFAULT" ]; then
+	echo "-A -p -s -q";
+      else
+	echo "$DEFAULT";
+      fi
+    fi
+  else 
+    echo "-A -p -s -q";
+  fi
+}
+
+if [ -x $XD ]; then
+  if [ -x "$ADJTIMED" ]; then
+     $ADJTIMED && ECHO "adjusttimesupport: adjtimed."
+  fi
+  #
+  # WARNING: check ps command first, or you might kill things you don't want to
+  #
+  PID="`(ps -efa 2>/dev/null || ps auxww 2>/dev/null || echo "") | grep xntp | grep -v grep | awk '{ print $2 }'`"
+
+  if [ ! -z "$PID" ]; then
+    ECHO "killing old NTP daemon (PID=$PID)"
+    #
+    # enable this after checking for correctness
+    # kill $PID
+    ECHO "should do a kill $PID, if this is the right PID - check rc script"
+  fi
+  #
+  # try an ntpdate when timeservers are configured
+  #
+  if [ ! -z "$NTPSERVERS" -a -x $NTPDATE ]; then
+	ECHO "NTP initial time setting"
+	$NTPDATE -v $NTPSERVERS | LOG
+  fi
+  #
+  # look for reference clock equipment
+  #
+  if $ISREFHOST; then
+	ECHO "REFERENCE CLOCK SUPPORT (initializing...)"
+	SETUP_REFCLOCK
+  fi
+
+  if [ -r "$CFH" ]; then
+    CF="$CFH"
+  else
+    if [ ! -r "$KEY" ]; then
+      KEY="$KEY.dumb"
+    fi
+  fi
+
+  ECHO "NTP configuration file: $CF"
+  ECHO -n "time daemon startup:"
+
+  if [ -r "$CF" ]; then
+    if [ -x "$KFIX" ]; then
+      KARGS="`kargs`"
+      if [ ! -z "$KARGS" ]; then
+        $KFIX $KARGS && ECHO -n "tickadj $KARGS"
+      fi
+    fi
+    $XD -c "$CF" -k "$KEY" && ECHO -n ' xntpd'
+    if [ -x "$TIMED" ] && grep -s TIMED "$CF"; then
+      $TIMED -M -N && ECHO -n ' timed'
+    fi
+  else
+    msg="configuration file ($CF) not present."
+  fi
+else
+  msg="daemon binary ($XD) not present."
+fi
+ECHO "."
+
+if [ "$msg" ]; then
+  NLECHO "WARNING: NO NTP time sychronisation: $msg"
+fi
diff --git a/scripts/support/etc/setup b/scripts/support/etc/setup
new file mode 100644
index 0000000..d4ea75e
--- /dev/null
+++ b/scripts/support/etc/setup
@@ -0,0 +1,72 @@
+#
+# setup,v 3.1 1993/07/06 01:10:55 jbj Exp
+#
+# /bin/sh sourced file for environment setup
+# expects NTPROOT variable initialized
+#
+# if not set it will be initialized to /usr/local/NTP
+#
+# setup,v
+# Revision 3.1  1993/07/06  01:10:55  jbj
+# XNTP release 3.1
+#
+#
+# Revision 1.1  1992/12/10  12:59:25  kardel
+# Prerelease NTP V3 / DCF
+#
+# Revision 1.1  1992/12/10  10:14:46  kardel
+# Initial revision
+#
+#
+NTPROOT=${NTPROOT-/usr/local/NTP}
+
+#
+# we so use our own echos, as we somes want to substitute them with a
+# file logging version durin the /etc/rc.local phase
+#
+set `type ECHO`
+
+PATH="${PATH}:$NTPROOT/bin"
+export PATH
+
+if [ "$2" = "is" ]; then
+	:
+else
+	#
+	# find out the way echos work (Rest of rc thinks BSD echo)
+	#
+        ECHOREP="`echo -n x`"
+        if [ "$ECHOREP" = "-n x" ]; then
+                ECHO () {
+                        if [ "$1" = "-n" ]; then
+                                shift
+                                echo "$@\c"
+                        else
+                                echo "$@"
+                        fi
+                }
+                #ECHO "System V style echo"
+        else
+                ECHO () {
+                        echo "$@"
+                }
+                #ECHO "BSD style echo"
+        fi
+
+	NLECHO () {
+		echo "$@"
+	}
+
+	LOG () {
+		while read _line; do
+			ECHO "$_line"
+		done
+	}
+	#
+	# carefully find out some configuration Variables
+	#
+	ARCH="`(arch) 2>/dev/null || ((uname) > /dev/null && uname -a | awk '{ print $6; }') 2>/dev/null || echo 'no-arch'`"
+	KARCH="`(arch -k) 2>/dev/null || ((uname) > /dev/null && uname -a | awk '{ print $5 }') || echo 'no-arch'`"
+	HOSTNAME="`(hostname) 2>/dev/null || uname -n`"
+fi
+