To use the shutdown command under Ubuntu Linux, you can use the sudo command to run the command as the root user.
The sudo command is a utility that allows users to run commands with the privileges of another user, usually the root user.
The shutdown command is a utility that shuts down or reboots the system.
To use the shutdown command under Ubuntu Linux, you can use the sudo command to run the shutdown command as the root user:
sudo shutdown -h now
This will shut down the system immediately.
To use the shutdown command with a timeout under Ubuntu Linux, you can use the sudo command to run the shutdown command with the -h option to halt the system and the + followed by the number of minutes until shutdown to specify the timeout:
sudo shutdown -h +10
This will shut down the system in 10 minutes.
To use the shutdown command to reboot the system under Ubuntu Linux, you can use the sudo command to run the shutdown command with the -r option to reboot the system and the now argument to shut it down immediately:
sudo shutdown -r now
This will shut down the system immediately and reboot it.
To use the shutdown command in a script under Ubuntu Linux, you can use the sudo command to run the shutdown command followed by the desired options and arguments:
sudo shutdown -h now echo "System shutdown complete"
This will shut down the system immediately and print a message when the shutdown is complete.
Keep in mind that these are just a few examples of how to use the shutdown command under Ubuntu Linux. You can customize the options and arguments to meet the specific requirements of your script. You should also regularly review and update the script to ensure that it is correct and efficient.