#!/bin/sh
#
# rpl: rpl str1 in files with str2, in place

PATH=/bin:/usr/bin

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

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

for i # same as for $*
do
    /home/brian/scripts/overwrite $i sed "s@$left@$right@g" $i
done

# $ cat footnote
# UNIX is not an acronym
# $ rpl UNIX Unix footnote
# Unix is not an acronym