ws.server@.service: service to launch the .jar websocket server and restart it on fail/stop + install.sh: installs the service into 'systemd' + uninstall.sh: uninstalls all from 'systemd'

install.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+
+# (1) Copy the systemd service file
+sudo cp /opt/ws.server/ws.server@.service /lib/systemd/system/ws.server@.service;
+
+# Note: cannot create a symlink, it will be too much link level
+#sudo ln -s /opt/ws.server/ws.server@.service /lib/systemd/system/ws.server@.service;
+
+# (2) Reload systemctl daemon to manage the new service
+sudo systemctl daemon-reload;
+
+# (3) Enable /opt/ws.server/ndli1718.jar to be executed at startup + restart on fail
+sudo systemctl enable ws.server@ndli1718.service;

uninstall.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+
+# (1) disable /opt/ws.server/ndli1718.jar
+sudo systemctl disable ws.server@ndli1718.service;
+
+# (2) Remove the service from systemd
+sudo rm /lib/systemd/system/ws.server@.service;
+
+# (3) Reload systemctl
+sudo systemctl daemon-reload;

ws.server@.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=WebSocket Server [%i]
+Before=network-pre.target
+Wants=network-pre.target
+
+[Service]
+Type=simple
+Restart=always
+ExecStart=/usr/bin/env java -jar /opt/ws.server/%i.jar
+
+[Install]
+WantedBy=multi-user.target