The runlevel is specified in the /etc/inittab file. Different runlevels and details are listed below:
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)
The default runlevel means the runlevel of the Linux system which is appearing by-default after a reboot.
You can findout the current runlevel by executing the following command:
grep id: /etc/inittab
Example:
[root@localhost ~]# grep id: /etc/inittab
id:5:initdefault:
How to change the default runlevel?
you can change it simply by editing the line which has the runlevel id:
vi /etc/inittab
-----
id:5:initdefault:
-----
Then reboot to get the changes which you have made.
That’s it..!! 🙂
