#! /bin/sh
# replace: replace str1 in files by str2

PATH=/bin:/usr/bin:/usr/local/bin:$PATH

case $# in
0|1|2)	echo 'Usage: replace str1 str2 files' 1>&2 ; exit 1
esac

left="$1" ; right="$2" ; shift ; shift

for i
do
	overwrite $i sed "s@$left@$right@g" $i
done
