debian:/home/pat# update-rc.d -f kdm remove
 Removing any system startup links for /etc/init.d/kdm ...
   /etc/rc0.d/K01kdm
   /etc/rc1.d/K01kdm
   /etc/rc2.d/S99kdm
   /etc/rc3.d/S99kdm
   /etc/rc4.d/S99kdm
   /etc/rc5.d/S99kdm
   /etc/rc6.d/K01kdm
debian:/home/pat# update-rc.d -f xdm remove
 Removing any system startup links for /etc/init.d/xdm ...
debian:/home/pat# update-rc.d -f gdm remove
 Removing any system startup links for /etc/init.d/gdm ...
   /etc/rc0.d/K01gdm
   /etc/rc1.d/K01gdm
   /etc/rc2.d/S30gdm
   /etc/rc3.d/S30gdm
   /etc/rc4.d/S30gdm
   /etc/rc5.d/S30gdm
   /etc/rc6.d/K01gdm
debian:/home/pat# .rc.d xdm start 99 5 . stop 01 0 1 2 3 4 6 .
bash: .rc.d: command not found
debian:/home/pat# update-rc.d xdm start 99 5 . stop 01 0 1 2 3 4 6 .
update-rc.d: /etc/init.d/xdm: file does not exist
debian:/home/pat#