gdb - Local mods (compile)
[dragonfly.git] / bin / sh / funcs / popd
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1#!/bin/sh
2
3#-
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4# Copyright (c) 1991, 1993
5# The Regents of the University of California. All rights reserved.
6#
7# This code is derived from software contributed to Berkeley by
8# Kenneth Almquist.
9#
10# Redistribution and use in source and binary forms, with or without
11# modification, are permitted provided that the following conditions
12# are met:
13# 1. Redistributions of source code must retain the above copyright
14# notice, this list of conditions and the following disclaimer.
15# 2. Redistributions in binary form must reproduce the above copyright
16# notice, this list of conditions and the following disclaimer in the
17# documentation and/or other materials provided with the distribution.
69763be3 18# 3. Neither the name of the University nor the names of its contributors
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19# may be used to endorse or promote products derived from this software
20# without specific prior written permission.
21#
22# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32# SUCH DAMAGE.
33#
34# @(#)popd 8.2 (Berkeley) 5/4/95
02d0b1ce 35# $FreeBSD$
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36
37# pushd, popd, and dirs --- written by Chris Bertin
38# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris
39# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW
40
41pushd () {
42 SAVE=`pwd`
43 if [ "$1" = "" ]
44 then if [ "$DSTACK" = "" ]
45 then echo "pushd: directory stack empty."
46 return 1
47 fi
48 set $DSTACK
49 cd $1 || return
50 shift 1
51 DSTACK="$*"
52 else cd $1 > /dev/null || return
53 fi
54 DSTACK="$SAVE $DSTACK"
55 dirs
56}
57
58popd () {
59 if [ "$DSTACK" = "" ]
60 then echo "popd: directory stack empty."
61 return 1
62 fi
63 set $DSTACK
64 cd $1
65 shift
66 DSTACK=$*
67 dirs
68}
69
70dirs () {
71 echo "`pwd` $DSTACK"
72 return 0
73}