projects / apple / shell_cmds.git / blame
| Commit | Line | Data |
|---|---|---|
| 71aad674 A |
1 | #!/bin/sh |
| 2 | ||
| 3 | #- | |
| 4 | # Copyright (c) 1991, 1993 | |
| 5 | # The Regents of the University of California. All rights reserved. | |
| 6 | # | |
| 7 | # This code is derived from software contributed to Berkeley by | |
| 8 | # Kenneth Almquist. | |
| 9 | # | |
| 10 | # Redistribution and use in source and binary forms, with or without | |
| 11 | # modification, are permitted provided that the following conditions | |
| 12 | # are met: | |
| 13 | # 1. Redistributions of source code must retain the above copyright | |
| 14 | # notice, this list of conditions and the following disclaimer. | |
| 15 | # 2. Redistributions in binary form must reproduce the above copyright | |
| 16 | # notice, this list of conditions and the following disclaimer in the | |
| 17 | # documentation and/or other materials provided with the distribution. | |
| 254f12f7 | 18 | # 3. Neither the name of the University nor the names of its contributors |
| 71aad674 A |
19 | # may be used to endorse or promote products derived from this software |
| 20 | # without specific prior written permission. | |
| 21 | # | |
| 22 | # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 23 | # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 24 | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 25 | # ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 26 | # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 27 | # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 28 | # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 29 | # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 30 | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 31 | # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 32 | # SUCH DAMAGE. | |
| 33 | # | |
| 34 | # @(#)dirs 8.2 (Berkeley) 5/4/95 | |
| 254f12f7 | 35 | # $FreeBSD: head/bin/sh/funcs/dirs 314436 2017-02-28 23:42:47Z imp $ |
| 71aad674 A |
36 | |
| 37 | # pushd, popd, and dirs --- written by Chris Bertin | |
| 38 | # Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris | |
| 39 | # as modified by Patrick Elam of GTRI and Kenneth Almquist at UW | |
| 40 | ||
| 41 | pushd () { | |
| 42 | SAVE=`pwd` | |
| 43 | if [ "$1" = "" ] | |
| 44 | then if [ "$DSTACK" = "" ] | |
| 45 | then echo "pushd: directory stack empty." | |
| 46 | return 1 | |
| 47 | fi | |
| 48 | set $DSTACK | |
| 49 | cd $1 || return | |
| 50 | shift 1 | |
| 51 | DSTACK="$*" | |
| 52 | else cd $1 > /dev/null || return | |
| 53 | fi | |
| 54 | DSTACK="$SAVE $DSTACK" | |
| 55 | dirs | |
| 56 | } | |
| 57 | ||
| 58 | popd () { | |
| 59 | if [ "$DSTACK" = "" ] | |
| 60 | then echo "popd: directory stack empty." | |
| 61 | return 1 | |
| 62 | fi | |
| 63 | set $DSTACK | |
| 64 | cd $1 | |
| 65 | shift | |
| 66 | DSTACK=$* | |
| 67 | dirs | |
| 68 | } | |
| 69 | ||
| 70 | dirs () { | |
| 71 | echo "`pwd` $DSTACK" | |
| 72 | return 0 | |
| 73 | } |