/bin/sh/funcs/dirs

https://bitbucket.org/freebsd/freebsd-head/ · Shell · 73 lines · 31 code · 5 blank · 37 comment · 5 complexity · 1651e35173366b5b6b6421a5dd820d84 MD5 · raw file

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