# /etc/systemd/system/ping_monitor.service
[Unit]
Description=Ping Monitor Service
After=network.target

[Service]
Type=simple
User=root
ExecStart=/usr/local/bin/ping_monitor.sh
Restart=always
RestartSec=10
StandardOutput=append:/var/log/ping_monitor.log
StandardError=append:/var/log/ping_monitor.log

[Install]
WantedBy=multi-user.target
## eof systemd service


sudo mkdir -p /etc/ping_monitor

## add devices here
sudo nano /etc/ping_monitor/devices.list

sudo cp ping_monitor.sh /usr/local/bin/
sudo chmod +x /usr/local/bin/ping_monitor.sh

sudo systemctl daemon-reload
sudo systemctl enable ping_monitor
sudo systemctl start ping_monitor