How to use the Linux shutdown command

The Linux shutdown command can be used to shut down a program and send a message to all the programs that the user is executing before shutdown. shutdown can also be used to restart the system.

Permission: system administrator.

Syntax

Shutdown [-t seconds] [-rkhncfF] time [message]

Parameter description:

• -T seconds: set to shut down the program in seconds.
• -K: It does not actually shut down, but only sends the warning message to all users.
• -R: Reboot After Shutdown
• -H: shut down after shutdown
• -N
• -C: cancels the shutdown action that is currently in progress.
• -F: do not perform fcsk operations when shutting down (check the Linux file system)
• -F: forces the fsck action when the instance is shut down.
• Time: Set the shutdown time
• Message: warning message sent to all users

Instance

Shut down now

# Shutdown-h now

Shutdown in 5 minutes

# Shutdown + 5 "System will shutdown after 5 minutes" // shutdown within 5 minutes and warning message displayed