# who -r
run-level 5 2012-09-28 11:21
So this means I am currently in run level 5 which is used for GUI and CLI.
To change the default run level of your linux machine just type the runlevel you want to be in using this format# init 3This will take you to CLI
# init 5This will take you to GUI
Once you switch your runlevel you can check your last run level using this command
According to this you just switched your machine from runlevel 3 to runlevel 5
But again using init every time is not a good idea if you want to be in CLI after you reboot your machine so to make permanent changes, change the default run level
# vi /etc/inittab
Default runlevel. The runlevels used 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
id:5:initdefault:Here 5 denotes the default runlevel where you are taken after your system reboots. So if you want to login to CLI directly after reboot then change the runlevel to 3
Reboot your machine to make the changes affect.
To check the current terminal you are logged on
If you want to change your terminal from GUI to CLI without affecting the current session then press Ctrl+Alt+F1, This will switch you to another terminal having CLI
You can do the same from F1 to F12 using Ctrl+Alt
Follow the below links for more tutorials
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Step by Step Linux Boot Process Explained In Detail
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Tutorial for Monitoring Tools SAR and KSAR with examples in Linux
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Understanding Load Average in Linux and when to be worried about it?
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How to keep a track of all the commands run by any user in Linux
How do you check Linux machine is Physical or Virtual remotely?