cat /etc/inittab
# 0 - halt (Do NOT set initdefault to this) System shutdown state, the system cannot be set to 0 by default
# 1 - Single user mode Single user mode, root privilege, used for maintenance, login in this mode does not require a password, and remote login is prohibited
# 2 - Multiuser, without NFS (The same as 3, if you do not have networking) Multi-user status, same as 3 without network
# 3 - Full multiuser mode Multi-user status, command line mode is also enabled by default ( If no GUI is installed)
# 4 - unused Unused, generally used in development state
# 5 - X11 graphical desktop mode
# 6 - reboot (Do NOT set initdefault to this) Reboot Set this level to reboot as soon as it is powered on
#
id: 3:initdefault:
[root@mrxw ~]# runlevel View run level
N 3