command: reboot purpose: reboot, halt, poweroff - reboot or stop the system syntax: reboot [OPTION].. options: -f, --force Does not invoke shutdown(8) and instead performs the actual action you would expect from the name. -p, --poweroff Instructs the halt command to instead behave as poweroff -w, --wtmp-only Does not call shutdown(8) or the reboot(2) system call and instead only writes the shutdown record to /var/log/wtmp --verbose Outputs slightly more verbose messages when rebooting, useful for debugging problems with shutdown. examples: 1. To reboot the system $ reboot sudo permission needed for user or # reboot 2. To reboot system with message to users before reboot # shutdown -r time "message" -r reboot time to reboot message to all users # shutdown -r +10 " system going to reboot save your work" 3. To see log of system reboot # last reboot regards, dhanasekar Kanchilug Blog : http://kanchilug.wordpress.com To subscribe/unsubscribe kanchilug mailing list : http://kanchilug.wordpress.com/join-mailing-list/