0,0 → 1,74 |
# $NetBSD: pushd,v 1.7 1995/05/11 21:31:15 christos Exp $ |
# Copyright (c) 1991, 1993 |
# The Regents of the University of California. All rights reserved. |
# |
# This code is derived from software contributed to Berkeley by |
# Kenneth Almquist. |
# |
# 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. |
# |
# @(#)pushd 8.2 (Berkeley) 5/4/95 |
|
# pushd, popd, and dirs --- written by Chris Bertin |
# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris |
# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW |
|
pushd () { |
SAVE=`pwd` |
if [ "$1" = "" ] |
then if [ "$DSTACK" = "" ] |
then echo "pushd: directory stack empty." |
return 1 |
fi |
set $DSTACK |
cd $1 || return |
shift 1 |
DSTACK="$*" |
else cd $1 > /dev/null || return |
fi |
DSTACK="$SAVE $DSTACK" |
dirs |
} |
|
popd () { |
if [ "$DSTACK" = "" ] |
then echo "popd: directory stack empty." |
return 1 |
fi |
set $DSTACK |
cd $1 |
shift |
DSTACK=$* |
dirs |
} |
|
dirs () { |
echo "`pwd` $DSTACK" |
return 0 |
} |