What is the use of Linux's shutdown command

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Linux common commands the shutdown command can be used to perform a shutdown procedure and to send messages to all users' executing programs before shutting down, and shutdown can also be used to restart.

Syntax shutdown [- t seconds] [- rkhncfF] time [message] parameter description:

-t seconds: set the shutdown procedure after a few seconds.

K: it doesn't really turn off, it just sends warning messages to all users.

-r: turn it off and restart it.

-h: shut down the machine after shutdown.

-n: do not use the normal program to shut down, kill all the programs in progress by force and then shut down by yourself.

-C: cancel the shutdown that is already in progress.

-f: when shutting down, do not do fsck action (check the Linux file system).

-F: force the fsck action when shutting down.

Time: set the shutdown time.

Message: warning messages sent to all users.

Instance shuts down immediately

# shutdown-h now specifies to shut down after 10 minutes

# shutdown-h 10 restart the computer

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