| [444] | 1 | #!/bin/sh |
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| 2 | # Like mv $1 $2, but if the files are the same, just delete $1. |
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| 3 | # Status is zero if successful, nonzero otherwise. |
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| 4 | |
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| 5 | VERSION='2012-01-06 07:23'; # UTC |
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| 6 | # The definition above must lie within the first 8 lines in order |
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| 7 | # for the Emacs time-stamp write hook (at end) to update it. |
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| 8 | # If you change this file with Emacs, please let the write hook |
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| 9 | # do its job. Otherwise, update this string manually. |
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| 10 | |
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| 11 | # Copyright (C) 2002-2014 Free Software Foundation, Inc. |
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| 12 | |
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| 13 | # This program is free software: you can redistribute it and/or modify |
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| 14 | # it under the terms of the GNU General Public License as published by |
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| 15 | # the Free Software Foundation, either version 3 of the License, or |
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| 16 | # (at your option) any later version. |
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| 17 | |
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| 18 | # This program is distributed in the hope that it will be useful, |
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| 19 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 20 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 21 | # GNU General Public License for more details. |
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| 22 | |
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| 23 | # You should have received a copy of the GNU General Public License |
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| 24 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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| 25 | |
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| 26 | usage="usage: $0 SOURCE DEST" |
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| 27 | |
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| 28 | help="$usage |
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| 29 | or: $0 OPTION |
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| 30 | If SOURCE is different than DEST, then move it to DEST; else remove SOURCE. |
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| 31 | |
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| 32 | --help display this help and exit |
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| 33 | --version output version information and exit |
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| 34 | |
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| 35 | The variable CMPPROG can be used to specify an alternative to 'cmp'. |
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| 36 | |
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| 37 | Report bugs to <bug-gnulib@gnu.org>." |
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| 38 | |
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| 39 | version=`expr "$VERSION" : '\([^ ]*\)'` |
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| 40 | version="move-if-change (gnulib) $version |
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| 41 | Copyright (C) 2011 Free Software Foundation, Inc. |
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| 42 | License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> |
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| 43 | This is free software: you are free to change and redistribute it. |
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| 44 | There is NO WARRANTY, to the extent permitted by law." |
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| 45 | |
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| 46 | cmpprog=${CMPPROG-cmp} |
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| 47 | |
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| 48 | for arg |
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| 49 | do |
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| 50 | case $arg in |
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| 51 | --help | --hel | --he | --h) |
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| 52 | exec echo "$help" ;; |
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| 53 | --version | --versio | --versi | --vers | --ver | --ve | --v) |
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| 54 | exec echo "$version" ;; |
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| 55 | --) |
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| 56 | shift |
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| 57 | break ;; |
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| 58 | -*) |
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| 59 | echo "$0: invalid option: $arg" >&2 |
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| 60 | exit 1 ;; |
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| 61 | *) |
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| 62 | break ;; |
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| 63 | esac |
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| 64 | done |
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| 65 | |
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| 66 | test $# -eq 2 || { echo "$0: $usage" >&2; exit 1; } |
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| 67 | |
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| 68 | if test -r "$2" && $cmpprog -- "$1" "$2" >/dev/null; then |
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| 69 | rm -f -- "$1" |
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| 70 | else |
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| 71 | if mv -f -- "$1" "$2"; then :; else |
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| 72 | # Ignore failure due to a concurrent move-if-change. |
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| 73 | test -r "$2" && $cmpprog -- "$1" "$2" >/dev/null && rm -f -- "$1" |
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| 74 | fi |
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| 75 | fi |
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| 76 | |
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| 77 | ## Local Variables: |
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| 78 | ## eval: (add-hook 'write-file-hooks 'time-stamp) |
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| 79 | ## time-stamp-start: "VERSION='" |
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| 80 | ## time-stamp-format: "%:y-%02m-%02d %02H:%02M" |
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| 81 | ## time-stamp-time-zone: "UTC" |
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| 82 | ## time-stamp-end: "'; # UTC" |
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| 83 | ## End: |
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