Fish (Unix shell)

Fish
Original author(s)Axel Liljencrantz
Developer(s)Fish-shell developers
Initial release13 February 2005 (2005-02-13)
Stable release
4.0.2  / 20 April 2025
Repository
Written inRust
Operating systemUnix-like
TypeUnix shell
LicenseGPL-2.0-only
Websitefishshell.com

Fish (friendly interactive shell; stylized in lowercase) is a Unix-like shell with a focus on interactivity and usability. Fish is designed to be feature-rich by default, rather than highly configurable, and does not adhere to POSIX shell standards by design.