Linux basic command learning: shutting down the system

Linux basic command learning: Shut down the system-Linux general technology-Linux technology and application information. The following is a detailed description. The shutdown command can safely shut down or restart the Linux system. It prompts a warning message to all logged-on users before the system is shut down. This command also allows you to specify a time parameter, which can be a precise time or a time period from now on.

The exact time format is hh: mm, indicating the hour and minute, and the time period is represented by + and the number of minutes. The system automatically synchronizes data after executing this command.

General format of the command
Shutdown [Option] [time] [Warning Information]

The meaning of each option in the command is:
-K does not actually shut down, but only sends a warning message to all users.
-R restarts immediately after shutdown.
-H: Do not restart after Shutdown
-F: Skip fsck during fast shutdown and restart
-N: fast shutdown without passing through the init program
-C. Cancel a running shutdown.

Note that this command can only be used by Super Users.

Example 1: The system shuts down in 10 minutes and restarts immediately.
# Shutdown? R + 10

Example 2: The system is shut down immediately without restarting
# Shutdown? H now