I have a CentOS 6.2 OS which boots into GUI. How, upon startup, can I not boot into the GUI and instead, boot into the CLI? I want to do this at computer startup time.
When you are at the GRUB menu where you select which OS to boot (if this menu don’t appear, press ESC while you get the “Booting CentOS in X seconds”), press e to edit your boot commands. You should see a screen like this: (parameters may vary)
Look for the line that begins with
kernel. Choose it and then press e again. You will be at a simple editor, add
3 to the end of this line. This means booting in runlevel 3, which is text-mode only.
To make this stick: edit
/etc/inittab and look for a line that begin with
id:5. Replace the
5 in that line by
3. You can find a brief description of runlevels here, but shortly:
- Runlevel 0 and 6: halt and reboot the machine, respectively.
- Runlevel 1: No services running, only root can login.
- Runlevel 2: Users can login but no networking.
- Runlevel 3: Networking and text-mode.
- Runlevel 4: unused.
- Runlevel 5: GUI.
- Apart from what Renan mentioned, you can switch to another runlevel by simply executing
sudo init [level-number]-- this is temporary, when you reboot, you get to your default, configured in
- If you don't want to see splash screen, you need to replace kernel param
textin boot menu. To make it permanent, edit
In Centos 8, you have to use
systemctl set-default TARGET.target command and replace
TARGET with either
multi-user for runlevel of 3, i.e. Terminal, or
graphical for runlevel of 5.
So this is the command to use in Centos 8 to switch to Terminal when the system gets restarted:
systemctl set-default multi-user.target
Once in Terminal, you can start the GUI again if you need to by using:
systemctl isolate graphical