Powertop Daemon

powertop

#! /bin/sh -e

DAEMON="/usr/sbin/powertop" #ligne de commande du programme
DEAMON_OPT="--auto-tune"  #argument à utiliser par le programme
DAEMONUSER="root" #utilisateur du programme
DEAMON_NAME="powertop" #Nom du programme (doit être identique à l'exécutable)

PATH="/sbin:/bin:/usr/sbin:/usr/bin" #Ne pas toucher

test -x $DAEMON || exit 0

. /lib/lsb/init-functions

d_start () {
        log_daemon_msg "Starting system $DEAMON_NAME Daemon"
	start-stop-daemon --background --name $DEAMON_NAME --start --quiet --chuid $DAEMONUSER --exec $DAEMON -- $DEAMON_OPT
        log_end_msg $?
}

d_stop () {
        log_daemon_msg "Stopping system $DEAMON_NAME Daemon"
        start-stop-daemon --name $DEAMON_NAME --stop --retry 5 --quiet --name $DEAMON_NAME
	log_end_msg $?
}

case "$1" in

        start|stop)
                d_${1}
                ;;

        restart|reload|force-reload)
                        d_stop
                        d_start
                ;;

        force-stop)
               d_stop
                killall -q $DEAMON_NAME || true
                sleep 2
                killall -q -9 $DEAMON_NAME || true
                ;;

        status)
                status_of_proc "$DEAMON_NAME" "$DAEMON" "system-wide $DEAMON_NAME" && exit 0 || exit $?
                ;;
        *)
                echo "Usage: /etc/init.d/$DEAMON_NAME {start|stop|force-stop|restart|reload|force-reload|status}"
                exit 1
                ;;
esac
exit 0

put it in /etc/init.d to daemonize powertop with autotuning settings.

then, launch :
sudo chmod 0755 /etc/init.d/powertop
sudo update-rc.d powertop defaults

Don't work for me on ubuntu 14.04