reboot
Purpose
Terminate all processes and reboot the system (you must log in as root ).
Syntax
reboot [options]
Options
-n reboots the system without flushing out in-memory buffers to disk. -f forces a halt without calling the /sbin/shutdown command.-i shuts down all network interfaces before rebooting the system.
Description
The reboot command lets the super user (root ) terminate all processes and reboot the system. The reboot command invokes /sbin/shutdown with the -r option.