SHUTDOWN, RESTART AND LOGOUT OF A SYSTEM

LOG IN TO ROOT USER:
Syntax: $su – (or) $su
$password: enter your root password.
[root-@local host]#
SHUTDOWN SYSTEM(2):
Syntax: [root-@local host]#init 0
LEAVE SESSION:
Syntax: [root-@local host]#logout

RESTART SYSTEM:
Syntax: [root-@local host]#reboot

SHUTDOWN SYSTEM(1):
Syntax: [root-@local host]#shutdown -h now

PLANNED SHUTDOWN OF THE SYSTEM AT 11.00
Syntax: [root-@local host]#shutdown -h 11.00 &

CANCEL A PLANNED SHUTDOWN OF THE SYSTEM:
Syntax: [root-@local host]#shutdown -c

REBOOT(1):
Syntax: [root-@local host]#shutdown -r now

SHUTDOWN SYSTEM(3):
Syntax: [root-@local host]#telinit 0
SHUTDOWN KDE SYSTEM:
Syntax: [root-@local host]#poweroff