Mercurial > hg > CbC > CbC_gcc

comparison move-if-change @ 0:a06113de4d67

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first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
parents
children f6334be47118
comparison
equal deleted inserted replaced
-1:000000000000 0:a06113de4d67
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
5 usage="$0: usage: $0 SOURCE DEST"
6
7 case $# in
8 2) ;;
9 *) echo "$usage" >&2; exit 1;;
10 esac
11
12 for arg in "$1" "$2"; do
13 case $arg in
14 -*) echo "$usage" >&2; exit 1;;
15 esac
16 done
17
18 if test -r "$2" && cmp -s "$1" "$2"; then
19 rm -f "$1"
20 else
21 mv -f "$1" "$2"
22 fi