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util

Some simple scripts. For fun / personal use.

Upduck

A simple script to update the IP address that a Duck DNS domain name resolves to.

Available environment variables*

  • $DUCKDNS_DOMAIN: The domain you want to update
  • $DUCKDNS_TOKEN: The token to use to authenticate the request
  • $DUCKDNS_IP: (Optional) The IP address that the provided domain should resolve to — Duck DNS will detect and use the source IP otherwise

*All other Duck DNS API options are optional; I'm aiming for feature parity in the future.

NOTE: command line options override environment variables.

Error codes:

  1. Invalid arguments
  2. Failure to find wget on the system
  3. No domain provided, by command option or environment variable
  4. No token provided, by command option or...
  5. Duck DNS returned a 'normal' bad response (check inputs)
  6. Duck DNS returned an unexpected error / response

Thank you!

Thanks to the folks at Duck DNS for offering such a great service!