Updated Autostart on Linux (markdown)

Autostart-on-Linux.md

@@ -1,3 +1,50 @@
+## Systemd ##
+Modern Linux systems have been updated to use the new systemd standard. The method is very simple and involves creating a service file then enabling it.
+
+**Create the service file**
+
+_Be sure to modify the user, group, mono path and install directory._
+
+Create the file lidarr.service with the content:
+```
+[Unit]
+Description=Lidarr Daemon
+After=network.target
+
+[Service]
+User={User account for Lidarr}
+Group={Group account for Lidarr}
+Type=simple
+ExecStart=/usr/bin/mono /opt/Lidarr/Lidarr.exe -nobrowser
+TimeoutStopSec=20
+KillMode=process
+Restart=on-failure
+[Install]
+WantedBy=multi-user.target
+```
+
+**Move the file to your system directory**
+
+Typically located in `/etc/systemd/system/`, **verify before proceeding**. Will differ based on distribution.
+
+```bash
+mv lidarr.service /etc/systemd/system/
+```
+
+**Add Lidarr to startup**
+
+```bash
+systemctl enable lidarr.service
+```
+
+**Start Lidarr service**
+
+Start Lidarr via systemd and verify status.
+
+```bash
+systemctl start lidarr.service
+systemctl status lidarr.service
+```
 
 ## Init.d Script (Debian/Ubuntu) ##