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Commit | Line | Data |
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a3acbf46 | 1 | #!/bin/sh |
e92fdf01 BE |
2 | # Like mv $1 $2, but if the files are the same, just delete $1. |
3 | # Status is zero if successful, nonzero otherwise. | |
a3acbf46 | 4 | |
e92fdf01 | 5 | usage="$0: usage: $0 SOURCE DEST" |
a3acbf46 | 6 | |
e92fdf01 BE |
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" | |
a3acbf46 | 20 | else |
e92fdf01 | 21 | mv -f "$1" "$2" |
a3acbf46 | 22 | fi |