Which Linux restart command is the most rigorous?

The most rigorous Linux restart command is shutdown -r now, because it directly restarts the system without any cleanup or preparation. Other reboot commands include reboot, init 6, and systemctl reboot, but they are less rigorous because some cleanup is performed before rebooting. Shutdown -r now is the most rigorous choice when a complete system reboot is required immediately.

The most rigorous Linux restart command

In the Linux system, the most rigorous restart command is shutdown -r now. This command directly restarts the system without performing any cleaning or preparation work to ensure a complete system restart.

Command detailed analysis

• shutdown: Command name, used to shut down or restart the system.
• -r: Option, specify to restart the system.
• now: Option, specify to perform restart immediately.

Comparison of other restart commands

In addition to shutdown -r now, there are some other restart commands, but they are rigorous To a lesser extent:

• #**reboot`: This command performs some cleanup work before performing a reboot, such as freeing memory and unmounting the file system.
• init 6: This command sets the system startup level to 6, thus triggering a restart.
• systemctl reboot: This command uses the systemd service manager to reboot the system. It should be noted that systemd is not universal in all Linux distributions.

Why choose shutdown -r now

When you need to completely restart the system immediately, shutdown -r now is the most rigorous choice. This command directly restarts the system without interfering with any running processes or services, thus ensuring that the system is in a clean and stable state after restarting.

Usage Example

To use the shutdown -r now command to restart the system, enter the following command in the terminal:

<code class="bash">shutdown -r now</code>

The system will restart immediately.

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