# $NetBSD: dirs,v 1.8 2016/02/29 23:50:59 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. # # 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. # # @(#)dirs 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 }