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# %sccs.include.redist.sh% 8# 9# @(#)popd 8.2 (Berkeley) 05/04/95 10 11# pushd, popd, and dirs --- written by Chris Bertin 12# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris 13# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW 14 15pushd () { 16 SAVE=`pwd` 17 if [ "$1" = "" ] 18 then if [ "$DSTACK" = "" ] 19 then echo "pushd: directory stack empty." 20 return 1 21 fi 22 set $DSTACK 23 cd $1 || return 24 shift 1 25 DSTACK="$*" 26 else cd $1 > /dev/null || return 27 fi 28 DSTACK="$SAVE $DSTACK" 29 dirs 30} 31 32popd () { 33 if [ "$DSTACK" = "" ] 34 then echo "popd: directory stack empty." 35 return 1 36 fi 37 set $DSTACK 38 cd $1 39 shift 40 DSTACK=$* 41 dirs 42} 43 44dirs () { 45 echo "`pwd` $DSTACK" 46 return 0 47} 48