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foc/kernel/fiasco/tool/move-if-change
2013-01-11 17:00:47 +01:00

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#!/bin/sh
# Like mv $1 $2, but if the files are the same, just delete $1.
# Status is 0 if $2 is changed, 1 otherwise.
quiet=
if test $1 = "-q"; then
quiet=1
shift
fi
if test -r $2; then
if cmp -s $1 $2; then
test $quiet || echo $2 is unchanged
rm -f $1
exit 1
else
mv -f $1 $2
fi
else
mv -f $1 $2
fi