#!/bin/sh -u
# compare two files in an IF statement, checking the return status of DIFF
# Reference: Chapter 11
# -IAN! idallen@ncf.ca

if diff /etc/group /etc/passwd >/dev/null ; then
	echo "the files are the same"
	date	
else
    	# this uses a command substitution to capture the date output
	today=$( date )
	echo "the files are different on $today"
fi