shutdown -h now Shutdown the system now and do not
reboot
halt Stop all processes – same as above
shutdown -r 5 Shutdown the system in 5 minutes and
reboot
shutdown -r now Shutdown the system now and reboot
shutdown -r -F now Force fsck on reboot.
shutdown -r -f now skip fsck on reboot.
reboot Stop all processes and then reboot – same
as above
startx Start the X system