and here is the /etc/init.d/vnstat from Ubuntu
I cant attach - so just here
#! /bin/sh
### BEGIN INIT INFO
# Provides: vnstat
# Required-Start: $local_fs $remote_fs $network
# Required-Stop: $local_fs $remote_fs $network
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: lightweight network traffic monitor
### END INIT INFO
PATH=/usr/sbin:/usr/bin:/sbin:/bin
DESC="vnStat daemon"
NAME=vnstatd
PIDFILE=/run/vnstat/vnstat.pid
DAEMON=/usr/sbin/$NAME
DAEMON_ARGS="-d --pidfile $PIDFILE"
SCRIPTNAME=/etc/init.d/vnstat
USER=vnstat
. /lib/lsb/init-functions
# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0
case "$1" in
start)
log_daemon_msg "Starting $DESC" "$NAME"
if [ ! -d /run/vnstat ]; then
mkdir /run/vnstat
fi
chown $USER:$USER /run/vnstat
start-stop-daemon --start --quiet --oknodo --chuid $USER \
--exec $DAEMON -- $DAEMON_ARGS
log_end_msg $?
;;
stop)
log_daemon_msg "Stopping $DESC" "$NAME"
start-stop-daemon --stop --quiet --oknodo --retry=TERM/15/KILL/5 --pidfile $PIDFILE \
--name $NAME
status=$?
rm -f $PIDFILE
log_end_msg $?
;;
status)
pidofproc -p $PIDFILE $DAEMON >/dev/null
status=$?
if [ $status -eq 0 ]; then
log_success_msg "$DESC is running"
else
log_failure_msg "$DESC is not running"
fi
exit $status
;;
reload|force-reload)
log_daemon_msg "Reloading $DESC configuration..."
start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
log_end_msg $?
;;
restart)
$0 stop
sleep 1
$0 start
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload|status}"
exit 1
;;
esac
