#!/bin/sh if [ -x /usr/bin/cmp ] ; then /usr/bin/cmp -s "$1" "$2" else sha1=`sha1sum -b "$1" | cut -d' ' -f 1` sha2=`sha1sum -b "$2" | cut -d' ' -f 1` [ -f "$1" -a -f "$2" -a "$sha1" = "$sha2" ] fi