Add the DragonFly cvs id and perform general cleanups on cvs/rcs/sccs ids. Most
[dragonfly.git] / bin / sh / funcs / popd
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1# Copyright (c) 1991, 1993
2# The Regents of the University of California. All rights reserved.
3#
4# This code is derived from software contributed to Berkeley by
5# Kenneth Almquist.
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions
9# are met:
10# 1. Redistributions of source code must retain the above copyright
11# notice, this list of conditions and the following disclaimer.
12# 2. Redistributions in binary form must reproduce the above copyright
13# notice, this list of conditions and the following disclaimer in the
14# documentation and/or other materials provided with the distribution.
15# 3. All advertising materials mentioning features or use of this software
16# must display the following acknowledgement:
17# This product includes software developed by the University of
18# California, Berkeley and its contributors.
19# 4. Neither the name of the University nor the names of its contributors
20# may be used to endorse or promote products derived from this software
21# without specific prior written permission.
22#
23# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33# SUCH DAMAGE.
34#
35# @(#)popd 8.2 (Berkeley) 5/4/95
36# $FreeBSD: src/bin/sh/funcs/popd,v 1.6 1999/08/27 23:15:35 peter Exp $
1de703da 37# $DragonFly: src/bin/sh/funcs/popd,v 1.2 2003/06/17 04:22:50 dillon Exp $
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38
39# pushd, popd, and dirs --- written by Chris Bertin
40# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris
41# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW
42
43pushd () {
44 SAVE=`pwd`
45 if [ "$1" = "" ]
46 then if [ "$DSTACK" = "" ]
47 then echo "pushd: directory stack empty."
48 return 1
49 fi
50 set $DSTACK
51 cd $1 || return
52 shift 1
53 DSTACK="$*"
54 else cd $1 > /dev/null || return
55 fi
56 DSTACK="$SAVE $DSTACK"
57 dirs
58}
59
60popd () {
61 if [ "$DSTACK" = "" ]
62 then echo "popd: directory stack empty."
63 return 1
64 fi
65 set $DSTACK
66 cd $1
67 shift
68 DSTACK=$*
69 dirs
70}
71
72dirs () {
73 echo "`pwd` $DSTACK"
74 return 0
75}