Mercurial > hg > CbC > CbC_gcc
annotate move-if-change @ 81:dbfc0d2dde36
minor fix
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Sat, 24 Sep 2011 02:43:04 +0900 (2011-09-23) |
parents | f6334be47118 |
children | 04ced10e8804 |
rev | line source |
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0 | 1 #!/bin/sh |
2 # Like mv $1 $2, but if the files are the same, just delete $1. | |
3 # Status is zero if successful, nonzero otherwise. | |
4 | |
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5 VERSION='2011-01-28 20:09'; # 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) 2002-2007, 2009-2011 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: $0 OPTION |
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30 If SOURCE is different than DEST, then move it to DEST; else remove SOURCE. |
0 | 31 |
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32 --help display this help and exit |
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33 --version output version information and exit |
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34 |
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35 The variable CMPPROG can be used to specify an alternative to \`cmp'. |
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36 |
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37 Report bugs to <bug-gnulib@gnu.org>." |
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38 |
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39 version=`expr "$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} |
0 | 47 |
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48 for arg |
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49 do |
0 | 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 ;; |
0 | 63 esac |
64 done | |
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" |
0 | 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 |
0 | 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: |