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Commit | Line | Data |
---|---|---|
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 |