The “shutdown” command is used to shutdown the system or schedules the system to shutdown through the terminal. Before the shutdown process, all logged in-receive notification. The scheduling format for this command is based on 24hrs format. By using this command we can shut down the system immediately. The following commands are used to shutdown the system.
To shut down the system immediately, use the command
# shutdown -h now
To reboot the system, use the command
# shutdown -r now
To schedule the system to shutdown with a 24hrs format, use the command
# shutdown -h 16.30
To cancel the scheduled shutdown process, use the command
# shutdown -c