#!/bin/bash

function movegears {
    x=$(( $RANDOM % 100 ))
    y=$(( $RANDOM % 100 ))
    w=$(( 100 + $RANDOM % 800 ))
    h=$(( 100 + $RANDOM % 500 ))
    wmctrl -r glxgears -e 0,$x,$y,$w,$h
}

glxgears &

while true ; do 
    PIDS=
    for i in 1 2 3 4 5 ; do 
	sh -c 'find / -mount -type f -print0 | xargs -0 cat > /dev/null' &
	PIDS="${PIDS} $!"
    done

    ( while true ; do movegears ; sleep 0.25 ; done ) &

    GP=$!;
    wait ${PIDS}

    kill ${GP};

    echo run done
done