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Diffstat (limited to 'binutils-2.17/move-if-change')
-rwxr-xr-x | binutils-2.17/move-if-change | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/binutils-2.17/move-if-change b/binutils-2.17/move-if-change new file mode 100755 index 0000000..ff74a55 --- /dev/null +++ b/binutils-2.17/move-if-change @@ -0,0 +1,22 @@ +#!/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 |