Tim wrote: > > The GUIs only provide a button/menu item for the user to use, you want > to remove or restrict the command that they refer to. > > Probably removing the "other/all" users execute permissions on the > reboot, poweroff, and halt commands, would do the trick. You'd also > want to remove the wires from the boxes reset and power switches, and > make sure that CTRL+ALT+DEL, and probably CTRL+ALT+BACKSPACE are masked > out. The latter two, I don't know where to do that. > Ctrl-Alt-Del is in /etc/inittab: # Trap CTRL-ALT-DELETE ca::ctrlaltdel:/sbin/shutdown -t3 -r now Ctrl-Alt-Backspace is in /etc/X11/xorg.conf: Section "ServerFlags" #DontZap # disable <Crtl><Alt><BS> (server abort) #DontZoom # disable <Crtl><Alt><KP_+>/<KP_-> (resolution switching) AllowMouseOpenFail # allows the server to start up even if the mouse doesn't work But preventing a user that has physical access to the machine from rebooting it or shutting it down is rather pointless. They can always pull the plug to do a shutdown. (Unless you have an internal UPS.) I would rather let them do a controlled shutdown... Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!