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systemd

To add a systemd service, simply add a file with the .service extension in the /etc/systemd/system directory.

Basic systemd service configuration file:

[Unit]
Description=[description]
After=network.target  # Script runs after the network is UP

[Service]
ExecStart=/path/to/script.sh
Restart=always  # Script will restart if it fails
User=root # run as the root user

[Install]
WantedBy=multi-user.target  # Services start at boot

The script /path/to/script.sh will be executed by the root user after the network is UP.

Start the service

systemctl daemon-reload
systemctl enable [name_of_service].service

hashtag
Common errors

  1. ExecStart

  • Script path not found

  • Script is not executable

  • Script does not contain shebang (#!) — alternatively, include shell path before the script path

Eg. /bin/bash /path/to/script.sh

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