List of 7 runlevels on Linux:
- 0 - halt
- 1 - Single user mode
- 2 - Multiuser, without NFS (same as 3, if NOT have networking
- 3 - Full multiuser mode
- 4 - unused
- 5 - X10
- 6 - reboot
Check current runlevel
runlevel
who -r
For systemd
systemctl get-default
Change default runlevel to 3
Edit /etc/inittab file
id:3:initdefault:
Just for fun, what if we set initdefault run level to 6.
The system keeps rebooting if we try setting initdefault run level to 6.
