old-cross-binutils/move-if-change

23 lines
384 B
Text
Raw Normal View History

1999-05-03 07:29:11 +00:00
#!/bin/sh
# Like mv $1 $2, but if the files are the same, just delete $1.
# Status is zero if successful, nonzero otherwise.
1999-05-03 07:29:11 +00:00
usage="$0: usage: $0 SOURCE DEST"
1999-05-03 07:29:11 +00:00
case $# in
2) ;;
*) echo "$usage" >&2; exit 1;;
esac
for arg in "$1" "$2"; do
case $arg in
-*) echo "$usage" >&2; exit 1;;
esac
done
if test -r "$2" && cmp -s "$1" "$2"; then
rm -f "$1"
1999-05-03 07:29:11 +00:00
else
mv -f "$1" "$2"
1999-05-03 07:29:11 +00:00
fi