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Linux top 50 cmd - Shutdown

One time during Star Trek: The Next Generation, Data commands the computer to "Shut down the holodeck!" Unfortunately, most systems don't have voice controls, but systems can still be shut down. This command happens to be the one to do just that. Technically, the shutdown call int shutdown(int s, int how)); causes all or part of a full-duplex connection on a socket associated with s to be shut down, but who's being technical? The shutdown command can also be used to issue a "Vulcan Neck Pinch" (Ctrl+Alt+Del) and restart the system.