I'm running Feisty 7.04 Server(no GUI) on a G4 Powerbook (15" Titanium) as the sole OS.   I'm administering it with SSH from a WindowsXP machine so I don't need/want the screen live on the Tit.   Admittedly, the screen does go blank after a while, but it's still illuminated.   How can I power it down completely from the command line?  I've seen reference to 'xset' and 'DPMS',  but I think they are only for X11, aren't they?  I hope this is less painful than my Yellow Pig experience.