Basic service management can also be done with the YaST Services Manager module. It supports starting, stopping, enabling and disabling services. It also lets you show a service's status and change the default target. Start the YaST module with.
Figure 13-1 Services Manager
To change the target the system boots into, choose a target from thedrop-down box. The most often used targets are (starting a graphical login screen) and (starting the system in command line mode).
Select a service from the table. Thecolumn shows whether it is currently running ( ) or not ( ). Toggle its status by choosing .
Starting or stopping a service changes its status for the currently running session. To change its status throughout a reboot, you need to enable or disable it.
Select a service from the table. Thecolumn shows whether it is currently or . Toggle its status by choosing .
By enabling or disabling a service you configure whether it is started during booting () or not ( ). This setting will not affect the current session. To change its status in the current session, you need to start or stop it.
To view the status message of a service, select it from the list and choose systemctl -l status MY_SERVICE.. The output you will see is identical to the one generated by the command
WARNING: Faulty Runlevel Settings May Damage Your System
Faulty runlevel settings may make your system unusable. Before applying your changes, make absolutely sure that you know their consequences.