QubesService changed

QubesService.md

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+---
+layout: wiki
+title: QubesService
+permalink: /wiki/QubesService/
+---
+
+Usage documentation is on [qvm-service manual page](/wiki/Dom0Tools/QvmService). There are also described predefined services.
+
+Under the hood enabled service in VM is signaled by file in /var/run/qubes-service. This can be used to implement almost enable/disable **per-VM** switch controlled by dom0. Adding support for systemd services is pretty simple:
+
+1.  Disable old service: `systemctl disable <service name>`
+2.  Create `/etc/systemd/system/<service name>.service` file containing:
+
+    ``` {.wiki}
+    .include /lib/systemd/system/<service name>.service
+    [Unit]
+    ConditionPathExists=/var/run/qubes-service/<service name>
+    ```
+
+3.  Enable new service: `systemctl enable <service name>`.
+
+This will cause service to be started only when you enable it with qvm-service for given VM.