Shutdown command
If you have root user authority, you can use the shutdown command to stop the system. If you are not authorized to use the shutdown command, simply log out of the operating system and leave it running.
Attention: Do not turn off the system without first shutting
down. Turning off the system ends all processes running on the system.
If other users are working on the system, or if jobs are running in
the background, data might be lost. Perform proper shutdown procedures
before you stop the system.
At the prompt, type the following:
shutdownWhen the shutdown command completes and the operating system stops running, you receive the following message:
....Shutdown completed....See the shutdown command for the complete syntax.