e92fdf0163
2005-09-06 Paul Eggert <eggert@cs.ucla.edu> * move-if-change: Don't output "$2 is unchanged"; suggested by Ben Elliston. Handle weird characters correctly.
23 lines
384 B
Bash
Executable file
23 lines
384 B
Bash
Executable file
#!/bin/sh
|
|
# Like mv $1 $2, but if the files are the same, just delete $1.
|
|
# Status is zero if successful, nonzero otherwise.
|
|
|
|
usage="$0: usage: $0 SOURCE DEST"
|
|
|
|
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"
|
|
else
|
|
mv -f "$1" "$2"
|
|
fi
|