Run levels : init 0 → Shut Down init 1 → Single user mode without GUI & NFS init 2 → Multi user mode without NFS init 3 → Multi user mode with NFS init 4 → Research Purpose init 5 → Multi user mode with GUI (Linux Graphics) init 6 → Reboot N...
System Run Levels Main Run Level 0 » Shutdown (or halt) the system 1 » Single-user mode; usually aliased as s or S 6 » Reboot the system Other Run Level 2 » Multiuser mode without networking 3 » Multiuser mode with networking 5 » Multiuser mo...
