Linux Tips Shutdown and Init levels

Linux Commands for Shutdown and Reboot

halt
poweroff
reboot
shutdown

Linux has SEVEN Runlevels( Operating Modes)

init 0 - System Halted

init 1 - Single User Mode

init 2 - Single User Mode with Networking

init 3 - Multi User Mode - Text Mode

init 4 - Not yet Defined

init 5 - Multi User Mode - X Windows

init 6 - Shutdown and Reboot