====== Ubuntu - SystemD - Conflicting Services ======

When two services should not run at the same time, you can use the **Conflicts** parameter.

----

===== Example =====

To stop a VPN running when using the Transmission service.

Edit the transmission-daemon.service.

<code bash>
sudo vi /lib/systemd/system/transmission-daemon.service
</code>

...add the following line in the **[Unit]** section:

<file bash>
Conflicts=vpn.service
</file>

<WRAP info>
**NOTE:**  vpn.service could be a service that starts a VPN connection.

  * This means that if I start the transmission-daemon.service, vpnservice will be automatically shut down, and vice versa.

</WRAP>

----

===== Reload systemd =====

Reload systemd for the changes to take effect.

<code bash>
sudo systemctl daemon-reload
</code>