for i in /usr/src/sys/*.c
do
case $i in
s.*) ;;
*) 	b=`basename $i .c`
	echo $i
	cc -S -I/usr/src/sys $i &
	/lib/cpp -I/usr/src/sys $i | comp >$b.ns
	wait
	if
		cmp $b.s $b.ns
	then
		rm $b.s $b.ns
	else
		echo ---------- $i
	fi
esac
done >u.1 2>u.2