fish (Unix shell)

fish
Original authorAxel Liljencrantz
DeveloperFish-shell developers
Release13 February 2005 (2005-02-13)
Stable release
4.9.3 Edit this on Wikidata / 8 September 2026
Written inRust since v4.0, C++ up to v3.7.1 C up to 1.8
Operating systemUnix-like
TypeUnix shell
LicenseGPL-2.0-only
Websitefishshell.com
Repository

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.