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Saturday, November 4, 2017
Change Default runlevel in Debian 9
Switch to the root user.
sudo su -
su -
Method 1
Let’s check the current run level by using the following command.
# systemctl get-default graphical.target
Before changing the default runlevel, check out the available targets.
# systemctl list-units --type=target
The output will look like below:
Issue the following command to change the default runlevel to runlevel 3 (nothing but a multi-user.target).
# systemctl set-default multi-user.target
Confirm the default runlevel.
# systemctl get-default multi-user.target
Reboot and check it out.
# reboot
Method 2
In the previous method, we made the runlevel 3 as the default runlevel. You can also confirm that using the following command.
# systemctl get-default multi-user.target
For a demo, issue the following command to make runlevel 5 as the default runlevel.
# ln -sf /lib/systemd/system/runlevel5.target /etc/systemd/system/default.target
# ln -sf /lib/systemd/system/graphical.target /etc/systemd/system/default.target
Again check the current level. Now the default runlevel is graphical mode(runlevel 5).
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