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Ubuntu Unleashed 2014 Edition: Covering 13.10 and 14.04,Ninth Edition by Paul Hudson, Andrew Hudson, Matthew Helmke

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Shutting Down the System

Use the shutdown command to shut down your system. The shutdown command has a number of different command-line options (such as shutting down at a predetermined time), but the fastest way to cleanly shut down Linux is to use the -h or halt option, followed by the word now or the numeral zero (0), like this:

matthew@seymour:~$ sudo shutdown -h now

or

matthew@seymour:~$ sudo shutdown -h 0

To incorporate a timed shutdown and a pertinent message to all active users, use shutdown’s time and message options, as follows:

matthew@seymour:~$ sudo shutdown -h 18:30 "System is going down for maintenance thisevening at 6:30 p.m. Please make ...

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