Note: The following instructions only apply for Linux distributions using systemd.

Create the following service file: /usr/lib/systemd/system/steam-key-activator.service

[Unit]
Description=Steam Key Activator
After=network.target

[Service]
WorkingDirectory=[ABSOLUTE_PATH_TO_SERVICE_DIRECTORY]
ExecStart=[ABSOLUTE_PATH_TO_SERVICE_DIRECTORY]/SteamKeyActivator
User=[YOUR_USERNAME]

[Install]
WantedBy=multi-user.target

Create the following timer file: /lib/systemd/system/steam-key-activator.timer

[Unit]
Description=Periodically activates a key on Steam

[Timer]
OnBootSec=5min
OnUnitActiveSec=10min

[Install]
WantedBy=timers.target

Values that you might want to change:

• OnBootSec: the delay before the service is started after the OS is booted
• OnUnitActiveSec: how often the service will be triggered

In the above example, the service will start 5 minutes after boot, and then again once every 50 minutes.