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authorKiyoshi Aman <kiyoshi.aman+adelie@gmail.com>2019-02-01 22:55:37 +0000
committerKiyoshi Aman <kiyoshi.aman+adelie@gmail.com>2019-02-03 18:22:05 -0600
commit5b57d28ffb6e1ef86b50f7d05d977826eae89bfe (patch)
tree154a22fe556b49e6927197336f8bf91b12eacd5e /bin/sh/funcs/pushd
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diff --git a/bin/sh/funcs/pushd b/bin/sh/funcs/pushd
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+# $NetBSD: pushd,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.
+#
+# @(#)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
+}