Linux Find Out Current Run Level Command

Type the following command:
$ who -r
OR
$runlevel

# Default runlevel. The runlevels used by RHS are:
#   0 - halt (Do NOT set initdefault to this)
#   1 - Single user mode
#   2 - Multiuser, without NFS (The same as 3, if you do not have networking)
#   3 - Full multiuser mode
#   4 - unused
#   5 - X11
#   6 - reboot (Do NOT set initdefault to this)

To change the default run level,

Step-1 edit /etc/inittab file, and edit entry initdefault:

Step-2 init 6

🙂