About

Fastmash was created by Peder Bergan, who designs, builds and maintains it.

The project started from a practical question: can a tool people use every day in data pipelines be made substantially faster, without asking them to change their commands, and without giving up correctness? Fastmash answers it with careful engineering: a Rust implementation of the whole GNU datamash command language, arithmetic that gives identical results on every machine, and performance claims backed by published measurements.

Acknowledgements

Fastmash follows the interface of GNU datamash, created by Assaf Gordon and maintained by its contributors. Fastmash is an independent project and is not affiliated with or endorsed by the GNU Project.

Contact

• Bugs and feature requests: GitHub issues
• Questions and ideas: GitHub discussions
• Security: see the security policy
• Anything else: pederbe.dev