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Home Operation and Maintenance CentOS Centos shutdown command line

Centos shutdown command line

Apr 14, 2025 pm 09:12 PM
centos ai

The CentOS shutdown command is shutdown, and the syntax is shutdown [Options] Time [Information]. Options include: -h Stop the system immediately; -P Turn off the power after shutdown; -r restart; -t Waiting time. Time can be specified as now, minutes, or a specific time (hh:mm). Added information can be displayed in system messages.

Centos shutdown command line

CentOS shutdown command line

In CentOS systems, shutdown command can be used to shut down. Here is its syntax:

 <code class="bash">shutdown [選項] 時間[信息]</code>

Options:

Options describe
-h Stop the system to run level halt immediately.
-P Turn off the power after shutdown (only if the system supports it).
-r Restart the system.
-t Specifies the time (in seconds) to wait before shutdown.

time:

You can specify the time using the following format:

  • now : Turn off the power immediately.
  • minutes : Turn off after the specified number of minutes (for example, 5 means shutdown after 5 minutes).
  • hh:mm : Turn off at the specified time (24-hour time, for example, 13:30 means shutdown at 1:30 pm).

information:

This parameter is used for the information displayed in the system message.

Example:

  • Turn off the power immediately:
 <code class="bash">shutdown now</code>
  • Turn off after 5 minutes:
 <code class="bash">shutdown 5</code>
  • Restart at 1:30 pm:
 <code class="bash">shutdown -r 13:30</code>
  • Turn off the power and turn off the power:
 <code class="bash">shutdown -P now</code>
  • Shut down and display the message "maintenance":
 <code class="bash">shutdown -h now "Maintenance in progress"</code>

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