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Diffstat (limited to '')
| -rw-r--r-- | usr/dash/funcs/pushd | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/usr/dash/funcs/pushd b/usr/dash/funcs/pushd new file mode 100644 index 0000000..483d358 --- /dev/null +++ b/usr/dash/funcs/pushd @@ -0,0 +1,71 @@ +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu <herbert@gondor.apana.org.au>. 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. 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 +} |