Heads up. Third-party apt repos install software that runs on your system as root. Only add repos you trust, and always verify the GPG fingerprint shown here against the vendor's official install page before running the key install commands.

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Generated third-party.sources

Pick a distribution and release, select one or more repos, then click Generate.

Key install

Shell commands to install the signing keys will appear here.

Install instructions

Short guidance to drop the sources in place will appear here.