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4 Restarting or Shutting Down a
Computer
In this chapter you will find commands you can use to shut
down or restart a local or remote computer.
Computers often must be shut down or restarted, whether locally or remotely, when
installing new tools or making computer repairs. This chapter covers the commands
needed to shut down or restart a local or remote computer.
Restarting a Computer
You can use the reboot or shutdown -r command to restart a computer at a specific
time. See the relevant man pages for more information.
To restart the local computer:
$ shutdown -r now
To restart a remote computer immediately:
$ ssh -l root
computer
shutdown -r now
To restart a remote computer at a specific time:
$ ssh -l root
computer
shutdown -r
hhmm
Automatic Restart
You can also use the systemsetup tool to set up the computer to start automatically
after a power failure or system freeze. See “Viewing or Changing Automatic Restart
Settings” on page 59.
Parameter Description
computer
The IP address or DNS name of the computer.
hhmm
The hour and minute when the computer restarts.