4 files changed, 266 insertions, 0 deletions
diff --git a/bin/echo/Makefile b/bin/echo/Makefile
new file mode 100644
index 0000000..d00d467
--- /dev/null
+++ b/bin/echo/Makefile
@@ -0,0 +1,6 @@
+#	@(#)Makefile	8.1 (Berkeley) 5/31/93
+# $FreeBSD$
+
+PROG=	echo
+
+.include <bsd.prog.mk>
diff --git a/bin/echo/Makefile.depend b/bin/echo/Makefile.depend
new file mode 100644
index 0000000..3646e2e
--- /dev/null
+++ b/bin/echo/Makefile.depend
@@ -0,0 +1,18 @@
+# $FreeBSD$
+# Autogenerated - do NOT edit!
+
+DIRDEPS = \
+	gnu/lib/csu \
+	gnu/lib/libgcc \
+	include \
+	include/xlocale \
+	lib/${CSU_DIR} \
+	lib/libc \
+	lib/libcompiler_rt \
+
+
+.include <dirdeps.mk>
+
+.if ${DEP_RELDIR} == ${_DEP_RELDIR}
+# local dependencies - needed for -jN in clean tree
+.endif
diff --git a/bin/echo/echo.1 b/bin/echo/echo.1
new file mode 100644
index 0000000..f1f3907
--- /dev/null
+++ b/bin/echo/echo.1
@@ -0,0 +1,105 @@
+.\"-
+.\" Copyright (c) 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the Institute of Electrical and Electronics Engineers, Inc.
+.\"
+.\" 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.
+.\" 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.
+.\"
+.\"	@(#)echo.1	8.1 (Berkeley) 7/22/93
+.\" $FreeBSD$
+.\"
+.Dd November 12, 2010
+.Dt ECHO 1
+.Os
+.Sh NAME
+.Nm echo
+.Nd write arguments to the standard output
+.Sh SYNOPSIS
+.Nm
+.Op Fl n
+.Op Ar string ...
+.Sh DESCRIPTION
+The
+.Nm
+utility writes any specified operands, separated by single blank
+.Pq Ql "\ "
+characters and followed by a newline
+.Pq Ql \en
+character, to the standard
+output.
+.Pp
+The following option is available:
+.Bl -tag -width flag
+.It Fl n
+Do not print the trailing newline character.
+.El
+.Pp
+The end-of-options marker
+.Fl Fl
+is not recognized and written literally.
+.Pp
+The newline may also be suppressed by appending
+.Ql \ec
+to the end of the string, as is done
+by iBCS2 compatible systems.
+Note that the
+.Fl n
+option as well as the effect of
+.Ql \ec
+are implementation-defined in
+.St -p1003.1-2001
+as amended by Cor.\& 1-2002.
+For portability,
+.Nm
+should only be used if the first argument does not start with a hyphen
+.Pq Ql "-"
+and does not contain any backslashes
+.Pq Ql "\e" .
+If this is not sufficient,
+.Xr printf 1
+should be used.
+.Pp
+Most shells provide a builtin
+.Nm
+command which tends to differ from this utility
+in the treatment of options and backslashes.
+Consult the
+.Xr builtin 1
+manual page.
+.Sh EXIT STATUS
+.Ex -std
+.Sh SEE ALSO
+.Xr builtin 1 ,
+.Xr csh 1 ,
+.Xr printf 1 ,
+.Xr sh 1
+.Sh STANDARDS
+The
+.Nm
+utility conforms to
+.St -p1003.1-2001
+as amended by Cor.\& 1-2002.
diff --git a/bin/echo/echo.c b/bin/echo/echo.c
new file mode 100644
index 0000000..68ff581
--- /dev/null
+++ b/bin/echo/echo.c
@@ -0,0 +1,137 @@
+/*-
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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.
+ * 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.
+ */
+
+#if 0
+#ifndef lint
+static char const copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)echo.c	8.1 (Berkeley) 5/31/93";
+#endif /* not lint */
+#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/uio.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/*
+ * Report an error and exit.
+ * Use it instead of err(3) to avoid linking-in stdio.
+ */
+static __dead2 void
+errexit(const char *prog, const char *reason)
+{
+	char *errstr = strerror(errno);
+	write(STDERR_FILENO, prog, strlen(prog));
+	write(STDERR_FILENO, ": ", 2);
+	write(STDERR_FILENO, reason, strlen(reason));
+	write(STDERR_FILENO, ": ", 2);
+	write(STDERR_FILENO, errstr, strlen(errstr));
+	write(STDERR_FILENO, "\n", 1);
+	exit(1);
+}
+	
+int
+main(int argc, char *argv[])
+{
+	int nflag;	/* if not set, output a trailing newline. */
+	int veclen;	/* number of writev arguments. */
+	struct iovec *iov, *vp; /* Elements to write, current element. */
+	char space[] = " ";
+	char newline[] = "\n";
+	char *progname = argv[0];
+
+	/* This utility may NOT do getopt(3) option parsing. */
+	if (*++argv && !strcmp(*argv, "-n")) {
+		++argv;
+		--argc;
+		nflag = 1;
+	} else
+		nflag = 0;
+
+	veclen = (argc >= 2) ? (argc - 2) * 2 + 1 : 0;
+
+	if ((vp = iov = malloc((veclen + 1) * sizeof(struct iovec))) == NULL)
+		errexit(progname, "malloc");
+
+	while (argv[0] != NULL) {
+		size_t len;
+		
+		len = strlen(argv[0]);
+
+		/*
+		 * If the next argument is NULL then this is this
+		 * the last argument, therefore we need to check
+		 * for a trailing \c.
+		 */
+		if (argv[1] == NULL) {
+			/* is there room for a '\c' and is there one? */
+			if (len >= 2 &&
+			    argv[0][len - 2] == '\\' &&
+			    argv[0][len - 1] == 'c') {
+				/* chop it and set the no-newline flag. */
+				len -= 2;
+				nflag = 1;
+			}
+		}
+		vp->iov_base = *argv;
+		vp++->iov_len = len;
+		if (*++argv) {
+			vp->iov_base = space;
+			vp++->iov_len = 1;
+		}
+	}
+	if (!nflag) {
+		veclen++;
+		vp->iov_base = newline;
+		vp++->iov_len = 1;
+	}
+	/* assert(veclen == (vp - iov)); */
+	while (veclen) {
+		int nwrite;
+
+		nwrite = (veclen > IOV_MAX) ? IOV_MAX : veclen;
+		if (writev(STDOUT_FILENO, iov, nwrite) == -1)
+			errexit(progname, "write");
+		iov += nwrite;
+		veclen -= nwrite;
+	}
+	return 0;
+}