#!/bin/awk -f
# cpuse - print average cpu usage since last run

BEGIN {
	getline < "/tmp/cpuse";
	ou=$1; ot=$2;
	while (getline < "/proc/stat") {
		if ($1 == "cpu") {
			u=$2+$3+$4+$7+$8+$9+$10+$11; t=u+$5+$6;
			print u,t > "/tmp/cpuse";
			printf "%i%%\n", ((u-ou)*100)/(t-ot);
			exit;
		}
	}
}