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diff --git a/share/zoneinfo/zic.8 b/share/zoneinfo/zic.8 new file mode 100644 index 0000000..66191c0 --- /dev/null +++ b/share/zoneinfo/zic.8 @@ -0,0 +1,424 @@ +.\" Copyright (c) 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Arthur David Olson of the National Cancer Institute. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)zic.8 8.1 (Berkeley) 6/8/93 +.\" +.TH ZIC 8 +.SH NAME +zic \- time zone compiler +.SH SYNOPSIS +.B zic +[ +.B \-v +] [ +.B \-d +.I directory +] [ +.B \-l +.I localtime +] [ +.B \-p +.I posixrules +] [ +.B \-L +.I leapsecondfilename +] [ +.B \-s +] [ +.I filename +\&... ] +.SH DESCRIPTION +.if t .ds lq `` +.if t .ds rq '' +.if n .ds lq \&"\" +.if n .ds rq \&"\" +.de q +\\$3\*(lq\\$1\*(rq\\$2 +.. +.I Zic +reads text from the file(s) named on the command line +and creates the time conversion information files specified in this input. +If a +.I filename +is +.BR \- , +the standard input is read. +.PP +These options are available: +.TP +.BI "\-d " directory +Create time conversion information files in the named directory rather than +in the standard directory named below. +.TP +.BI "\-l " timezone +Use the given time zone as local time. +.I Zic +will act as if the input contained a link line of the form +.sp +.ti +.5i +Link \fItimezone\fP localtime +.TP +.BI "\-p " timezone +Use the given time zone's rules when handling POSIX-format +time zone environment variables. +.I Zic +will act as if the input contained a link line of the form +.sp +.ti +.5i +Link \fItimezone\fP posixrules +.TP +.BI "\-L " leapsecondfilename +Read leap second information from the file with the given name. +If this option is not used, +no leap second information appears in output files. +.TP +.B \-v +Complain if a year that appears in a data file is outside the range +of years representable by +.IR time (2) +values. +.TP +.B \-s +Limit time values stored in output files to values that are the same +whether they're taken to be signed or unsigned. +You can use this option to generate SVVS-compatible files. +.sp +Input lines are made up of fields. +Fields are separated from one another by any number of white space characters. +Leading and trailing white space on input lines is ignored. +An unquoted sharp character (#) in the input introduces a comment which extends +to the end of the line the sharp character appears on. +White space characters and sharp characters may be enclosed in double quotes +(") if they're to be used as part of a field. +Any line that is blank (after comment stripping) is ignored. +Non-blank lines are expected to be of one of three types: +rule lines, zone lines, and link lines. +.PP +A rule line has the form +.nf +.B +.ti +.5i +.ta \w'Rule\0\0'u +\w'NAME\0\0'u +\w'FROM\0\0'u +\w'1973\0\0'u +\w'TYPE\0\0'u +\w'Apr\0\0'u +\w'lastSun\0\0'u +\w'2:00\0\0'u +\w'SAVE\0\0'u +.sp +Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +.sp +For example: +.ti +.5i +.sp +Rule USA 1969 1973 \- Apr lastSun 2:00 1:00 D +.sp +.fi +The fields that make up a rule line are: +.TP "\w'LETTER/S'u" +.B NAME +Gives the (arbitrary) name of the set of rules this rule is part of. +.TP +.B FROM +Gives the first year in which the rule applies. +The word +.B minimum +(or an abbreviation) means the minimum year with a representable time value. +The word +.B maximum +(or an abbreviation) means the maximum year with a representable time value. +.TP +.B TO +Gives the final year in which the rule applies. +In addition to +.B minimum +and +.B maximum +(as above), +the word +.B only +(or an abbreviation) +may be used to repeat the value of the +.B FROM +field. +.TP +.B TYPE +Gives the type of year in which the rule applies. +If +.B TYPE +is +.B \- +then the rule applies in all years between +.B FROM +and +.B TO +inclusive; +if +.B TYPE +is +.BR uspres , +the rule applies in U.S. Presidential election years; +if +.B TYPE +is +.BR nonpres , +the rule applies in years other than U.S. Presidential election years. +If +.B TYPE +is something else, then +.I zic +executes the command +.ti +.5i +\fByearistype\fP \fIyear\fP \fItype\fP +.br +to check the type of a year: +an exit status of zero is taken to mean that the year is of the given type; +an exit status of one is taken to mean that the year is not of the given type. +.TP +.B IN +Names the month in which the rule takes effect. +Month names may be abbreviated. +.TP +.B ON +Gives the day on which the rule takes effect. +Recognized forms include: +.nf +.in +.5i +.sp +.ta \w'Sun<=25\0\0'u +5 the fifth of the month +lastSun the last Sunday in the month +lastMon the last Monday in the month +Sun>=8 first Sunday on or after the eighth +Sun<=25 last Sunday on or before the 25th +.fi +.in -.5i +.sp +Names of days of the week may be abbreviated or spelled out in full. +Note that there must be no spaces within the +.B ON +field. +.TP +.B AT +Gives the time of day at which the rule takes effect. +Recognized forms include: +.nf +.in +.5i +.sp +.ta \w'1:28:13\0\0'u +2 time in hours +2:00 time in hours and minutes +15:00 24-hour format time (for times after noon) +1:28:14 time in hours, minutes, and seconds +.fi +.in -.5i +.sp +Any of these forms may be followed by the letter +.B w +if the given time is local +.q "wall clock" +time or +.B s +if the given time is local +.q standard +time; in the absence of +.B w +or +.BR s , +wall clock time is assumed. +.TP +.B SAVE +Gives the amount of time to be added to local standard time when the rule is in +effect. +This field has the same format as the +.B AT +field +(although, of course, the +.B w +and +.B s +suffixes are not used). +.TP +.B LETTER/S +Gives the +.q "variable part" +(for example, the +.q S +or +.q D +in +.q EST +or +.q EDT ) +of time zone abbreviations to be used when this rule is in effect. +If this field is +.BR \- , +the variable part is null. +.PP +A zone line has the form +.sp +.nf +.ti +.5i +.ta \w'Zone\0\0'u +\w'Australia/South\-west\0\0'u +\w'GMTOFF\0\0'u +\w'RULES/SAVE\0\0'u +\w'FORMAT\0\0'u +Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] +.sp +For example: +.sp +.ti +.5i +Zone Australia/South\-west 9:30 Aus CST 1987 Mar 15 2:00 +.sp +.fi +The fields that make up a zone line are: +.TP "\w'GMTOFF'u" +.B NAME +The name of the time zone. +This is the name used in creating the time conversion information file for the +zone. +.TP +.B GMTOFF +The amount of time to add to GMT to get standard time in this zone. +This field has the same format as the +.B AT +and +.B SAVE +fields of rule lines; +begin the field with a minus sign if time must be subtracted from GMT. +.TP +.B RULES/SAVE +The name of the rule(s) that apply in the time zone or, +alternately, an amount of time to add to local standard time. +If this field is +.B \- +then standard time always applies in the time zone. +.TP +.B FORMAT +The format for time zone abbreviations in this time zone. +The pair of characters +.B %s +is used to show where the +.q "variable part" +of the time zone abbreviation goes. +.TP +.B UNTIL +The time at which the GMT offset or the rule(s) change for a location. +It is specified as a year, a month, a day, and a time of day. +If this is specified, +the time zone information is generated from the given GMT offset +and rule change until the time specified. +.IP +The next line must be a +.q continuation +line; this has the same form as a zone line except that the +string +.q Zone +and the name are omitted, as the continuation line will +place information starting at the time specified as the +.B UNTIL +field in the previous line in the file used by the previous line. +Continuation lines may contain an +.B UNTIL +field, just as zone lines do, indicating that the next line is a further +continuation. +.PP +A link line has the form +.sp +.nf +.ti +.5i +.if t .ta \w'Link\0\0'u +\w'LINK-FROM\0\0'u +.if n .ta \w'Link\0\0'u +\w'US/Eastern\0\0'u +Link LINK-FROM LINK-TO +.sp +For example: +.sp +.ti +.5i +Link US/Eastern EST5EDT +.sp +.fi +The +.B LINK-FROM +field should appear as the +.B NAME +field in some zone line; +the +.B LINK-TO +field is used as an alternate name for that zone. +.PP +Except for continuation lines, +lines may appear in any order in the input. +.PP +Lines in the file that describes leap seconds have the following form: +.nf +.B +.ti +.5i +.ta \w'Leap\0\0'u +\w'YEAR\0\0'u +\w'MONTH\0\0'u +\w'DAY\0\0'u +\w'HH:MM:SS\0\0'u +\w'CORR\0\0'u +Leap YEAR MONTH DAY HH:MM:SS CORR R/S +.sp +For example: +.ti +.5i +.sp +Leap 1974 Dec 31 23:59:60 + S +.sp +.fi +The +.BR YEAR , +.BR MONTH , +.BR DAY , +and +.B HH:MM:SS +fields tell when the leap second happened. +The +.B CORR +field +should be +.q + +if a second was added +or +.q - +if a second was skipped. +The +.B R/S +field +should be (an abbreviation of) +.q Stationary +if the leap second time given by the other fields should be interpreted as GMT +or +(an abbreviation of) +.q Rolling +if the leap second time given by the other fields should be interpreted as +local wall clock time. +.SH NOTE +For areas with more than two types of local time, +you may need to use local standard time in the +.B AT +field of the earliest transition time's rule to ensure that +the earliest transition time recorded in the compiled file is correct. +.SH FILE +/etc/zoneinfo standard directory used for created files +.SH "SEE ALSO" +newctime(3), tzfile(5), zdump(8) +.. @(#)zic.8 4.4 |