update-rc.d myscript defaults 99 01

#!/bin/sh
### BEGIN INIT INFO
# Provides:          myscript
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start daemon at boot time
# Description:       Enable service provided by daemon.
### END INIT INFO

case "$1" in
  start)

    service tomcat6 restart
    /usr/local/lib/geoserver-2.5/bin/startup.sh

    ;;
esac

quit 0