19ddb49cbSWarner Losh#!/bin/sh 29ddb49cbSWarner Losh 39ddb49cbSWarner Losh#- 44b88c807SRodney W. Grimes# Copyright (c) 1991, 1993 54b88c807SRodney W. Grimes# The Regents of the University of California. All rights reserved. 64b88c807SRodney W. Grimes# 74b88c807SRodney W. Grimes# This code is derived from software contributed to Berkeley by 84b88c807SRodney W. Grimes# Kenneth Almquist. 94b88c807SRodney W. Grimes# 104b88c807SRodney W. Grimes# Redistribution and use in source and binary forms, with or without 114b88c807SRodney W. Grimes# modification, are permitted provided that the following conditions 124b88c807SRodney W. Grimes# are met: 134b88c807SRodney W. Grimes# 1. Redistributions of source code must retain the above copyright 144b88c807SRodney W. Grimes# notice, this list of conditions and the following disclaimer. 154b88c807SRodney W. Grimes# 2. Redistributions in binary form must reproduce the above copyright 164b88c807SRodney W. Grimes# notice, this list of conditions and the following disclaimer in the 174b88c807SRodney W. Grimes# documentation and/or other materials provided with the distribution. 18fbbd9655SWarner Losh# 3. Neither the name of the University nor the names of its contributors 194b88c807SRodney W. Grimes# may be used to endorse or promote products derived from this software 204b88c807SRodney W. Grimes# without specific prior written permission. 214b88c807SRodney W. Grimes# 224b88c807SRodney W. Grimes# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 234b88c807SRodney W. Grimes# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 244b88c807SRodney W. Grimes# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 254b88c807SRodney W. Grimes# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 264b88c807SRodney W. Grimes# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 274b88c807SRodney W. Grimes# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 284b88c807SRodney W. Grimes# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 294b88c807SRodney W. Grimes# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 304b88c807SRodney W. Grimes# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 314b88c807SRodney W. Grimes# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 324b88c807SRodney W. Grimes# SUCH DAMAGE. 334b88c807SRodney W. Grimes 344b88c807SRodney W. Grimes# pushd, popd, and dirs --- written by Chris Bertin 354b88c807SRodney W. Grimes# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris 364b88c807SRodney W. Grimes# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW 374b88c807SRodney W. Grimes 384b88c807SRodney W. Grimespushd () { 394b88c807SRodney W. Grimes SAVE=`pwd` 404b88c807SRodney W. Grimes if [ "$1" = "" ] 414b88c807SRodney W. Grimes then if [ "$DSTACK" = "" ] 424b88c807SRodney W. Grimes then echo "pushd: directory stack empty." 434b88c807SRodney W. Grimes return 1 444b88c807SRodney W. Grimes fi 454b88c807SRodney W. Grimes set $DSTACK 464b88c807SRodney W. Grimes cd $1 || return 474b88c807SRodney W. Grimes shift 1 484b88c807SRodney W. Grimes DSTACK="$*" 494b88c807SRodney W. Grimes else cd $1 > /dev/null || return 504b88c807SRodney W. Grimes fi 514b88c807SRodney W. Grimes DSTACK="$SAVE $DSTACK" 524b88c807SRodney W. Grimes dirs 534b88c807SRodney W. Grimes} 544b88c807SRodney W. Grimes 554b88c807SRodney W. Grimespopd () { 564b88c807SRodney W. Grimes if [ "$DSTACK" = "" ] 574b88c807SRodney W. Grimes then echo "popd: directory stack empty." 584b88c807SRodney W. Grimes return 1 594b88c807SRodney W. Grimes fi 604b88c807SRodney W. Grimes set $DSTACK 614b88c807SRodney W. Grimes cd $1 624b88c807SRodney W. Grimes shift 634b88c807SRodney W. Grimes DSTACK=$* 644b88c807SRodney W. Grimes dirs 654b88c807SRodney W. Grimes} 664b88c807SRodney W. Grimes 674b88c807SRodney W. Grimesdirs () { 684b88c807SRodney W. Grimes echo "`pwd` $DSTACK" 694b88c807SRodney W. Grimes return 0 704b88c807SRodney W. Grimes} 71