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  1. Edit sudo vi /etc/systemd/system/xguard.service
[Unit]
Description=Crossing Guard
Requires=network.target
After=syslog.target network-online.target

[Service]
Type=simple
User=panda
WorkingDirectory=/canvas-supports/crossing-guard
ExecStart=/usr/bin/ruby /canvas-supports/crossing-guard/guard.rb
ExecStop=/bin/kill -- $MAINPID
ExecReload=/bin/kill -s HUP $MAINPID
KillSignal=SIGTERM
KillMode=process
Environment=SYSTEMD_LOG_LEVEL=debug

# if we crash, restart
RestartSec=30
Restart=always

# This will default to "bundler" if we don't specify it
SyslogIdentifier=xguard

[Install]
WantedBy=multi-user.target

  1. Reload and Enable

    sudo systemctl daemon-reload; sudo systemctl enable xguard

  2. Start the service

    sudo systemctl start xguard

  3. Check the status

    sudo systemctl status xguard.service

  4. Stop and Restart

    sudo systemctl stop xguard

    sudo systemctl restart xguard

    sudo journalctl -u xguard.service

    sudo journalctl -u xguard.service --since '1 hour ago'

    systemctl show xguard.service | grep -i restart