while true; do find /usr -type f -exec cat '{}' ';' > /dev/null; done &
while true; do true; done &
while true; do true; done &
while true; do true; done &
while true; do true; done &
while true; do true; done &
while true; do true; done &
while true; do true; done &
while true; do true; done &
wait $!
