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comparison move-if-change @ 67:f6334be47118

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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 22 Mar 2011 17:18:12 +0900
parents a06113de4d67
children 04ced10e8804
comparison
equal deleted inserted replaced
65:65488c3d617d 67:f6334be47118
1 #!/bin/sh 1 #!/bin/sh
2 # Like mv $1 $2, but if the files are the same, just delete $1. 2 # Like mv $1 $2, but if the files are the same, just delete $1.
3 # Status is zero if successful, nonzero otherwise. 3 # Status is zero if successful, nonzero otherwise.
4 4
5 usage="$0: usage: $0 SOURCE DEST" 5 VERSION='2011-01-28 20:09'; # UTC
6 # The definition above must lie within the first 8 lines in order
7 # for the Emacs time-stamp write hook (at end) to update it.
8 # If you change this file with Emacs, please let the write hook
9 # do its job. Otherwise, update this string manually.
6 10
7 case $# in 11 # Copyright (C) 2002-2007, 2009-2011 Free Software Foundation, Inc.
8 2) ;;
9 *) echo "$usage" >&2; exit 1;;
10 esac
11 12
12 for arg in "$1" "$2"; do 13 # This program is free software: you can redistribute it and/or modify
14 # it under the terms of the GNU General Public License as published by
15 # the Free Software Foundation, either version 3 of the License, or
16 # (at your option) any later version.
17
18 # This program is distributed in the hope that it will be useful,
19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 # GNU General Public License for more details.
22
23 # You should have received a copy of the GNU General Public License
24 # along with this program. If not, see <http://www.gnu.org/licenses/>.
25
26 usage="usage: $0 SOURCE DEST"
27
28 help="$usage
29 or: $0 OPTION
30 If SOURCE is different than DEST, then move it to DEST; else remove SOURCE.
31
32 --help display this help and exit
33 --version output version information and exit
34
35 The variable CMPPROG can be used to specify an alternative to \`cmp'.
36
37 Report bugs to <bug-gnulib@gnu.org>."
38
39 version=`expr "$VERSION" : '\([^ ]*\)'`
40 version="move-if-change (gnulib) $version
41 Copyright (C) 2011 Free Software Foundation, Inc.
42 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
43 This is free software: you are free to change and redistribute it.
44 There is NO WARRANTY, to the extent permitted by law."
45
46 cmpprog=${CMPPROG-cmp}
47
48 for arg
49 do
13 case $arg in 50 case $arg in
14 -*) echo "$usage" >&2; exit 1;; 51 --help | --hel | --he | --h)
52 exec echo "$help" ;;
53 --version | --versio | --versi | --vers | --ver | --ve | --v)
54 exec echo "$version" ;;
55 --)
56 shift
57 break ;;
58 -*)
59 echo "$0: invalid option: $arg" >&2
60 exit 1 ;;
61 *)
62 break ;;
15 esac 63 esac
16 done 64 done
17 65
18 if test -r "$2" && cmp -s "$1" "$2"; then 66 test $# -eq 2 || { echo "$0: $usage" >&2; exit 1; }
19 rm -f "$1" 67
68 if test -r "$2" && $cmpprog -- "$1" "$2" >/dev/null; then
69 rm -f -- "$1"
20 else 70 else
21 mv -f "$1" "$2" 71 if mv -f -- "$1" "$2"; then :; else
72 # Ignore failure due to a concurrent move-if-change.
73 test -r "$2" && $cmpprog -- "$1" "$2" >/dev/null && rm -f -- "$1"
74 fi
22 fi 75 fi
76
77 ## Local Variables:
78 ## eval: (add-hook 'write-file-hooks 'time-stamp)
79 ## time-stamp-start: "VERSION='"
80 ## time-stamp-format: "%:y-%02m-%02d %02H:%02M"
81 ## time-stamp-time-zone: "UTC"
82 ## time-stamp-end: "'; # UTC"
83 ## End: