kodistart

#! /bin/sh

### BEGIN INIT INFO
# Provides:          xbmc
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts instance of XBMC
# Description:       starts instance of XBMC using start-stop-daemon and xinit
### END INIT INFO

############### EDIT ME ##################

# path to xinit exec
DAEMON=/usr/bin/xinit

# startup args
DAEMON_OPTS=" /usr/local/bin/xbmc --standalone -- :0"

# script name
NAME=xbmc

# app name
DESC=XBMC

# user
RUN_AS=sterfield

# Path of the PID file
PID_FILE=/var/run/xbmc.pid

############### END EDIT ME ##################

test -x $DAEMON || exit 0

set -e

case "$1" in
  start)
        echo "Starting $DESC"
        start-stop-daemon --start -c $RUN_AS --background --pidfile $PID_FILE  --make-pidfile --exec $DAEMON -- $DAEMON_OPTS
        ;;
  stop)
        echo "Stopping $DESC"
        start-stop-daemon --stop --pidfile $PID_FILE
        ;;

  restart|force-reload)
        echo "Restarting $DESC"
        start-stop-daemon --stop --pidfile $PID_FILE
        sleep 5
        start-stop-daemon --start -c $RUN_AS --background --pidfile $PID_FILE  --make-pidfile --exec $DAEMON -- $DAEMON_OPTS
        ;;
  *)
        N=/etc/init.d/$NAME
        echo "Usage: $N {start|stop|restart|force-reload}" >&2
        exit 1
        ;;
esac

exit 0

Taken from Kodi docs but put here so I could curl the page

Need to change the RUN_AS to whatever user you want to run as kodi
Need to change path to xbmc as well(for Ubuntu package it was /usr/bin/xbmc not /usr/local/bin/xbmc)