looperd

#! /bin/sh

PID_FILE=/var/run/looperd.pid
PATH=/sbin:/usr/sbin:/bin:/usr/bin


_do_loop () {
	echo $$ > ${PID_FILE}

	while [ 1 ]; do

		logger -t $0 pid=$$
		sleep 5

	done
}

_do_kill () {
	if [ -e ${PID_FILE} -a -f ${PID_FILE} ]; then
		kill -kill `cat ${PID_FILE}`
		rm -f ${PID_FILE}
	fi
}

_do_start () {
	if [ ! -e ${PID_FILE} ]; then
		$0 start_loop &
	fi
}


case "$1" in
	start)
		_do_start
		;;
	start_loop)
		_do_loop
		;;
	restart)
		_do_kill
		_do_start
		;;
	stop)
		_do_kill
		;;
	*)
		echo "Usage: $0 start|restart|stop" >&2
		exit 3
		;;
esac