In my gnome GUI desktop of Ubuntu 12.04, Ctrl+Alt+Delete will log out instead of rebooting.
But I was told that
Switching to a text-based virtual console and pressing Ctrl+Alt+Delete will reboot the machine. It will shut down cleanly and reboot, which is much better than Alt+SysRq+REISUB.
So I wonder if the above two different meanings of Ctrl+Alt+Delete are right?
What commands Ctrl+Alt+Delete is binded to in these two cases?