hash v30 – A POSIX-compliant shell written from scratch in C

hash is a fast, lightweight Unix shell written from scratch in C with a focus on POSIX compliance and cross-platform portability.

Whether you're on Linux, macOS, or FreeBSD, x86_64 or ARM64, hash runs natively with zero dependencies. It's designed for developers who appreciate the simplicity of POSIX semantics but want a shell built with modern tooling and release practices.

What makes hash different:

🔧 Built from scratch. Not a fork or wrapper.

📜 POSIX-first. Passes a growing suite of POSIX compliance tests.

⭐ Starship support. Use your favorite prompt out of the box.

📦 Easy installation. APT repository for Debian/Ubuntu, Homebrew for macOS, static binaries for everything else, checksums for verification.

🔒 Signed releases. GPG-signed commits and tags. Know what you're running.

v30 highlights:

• Major POSIX semantics fixes for case escaping, expansion order, readonly variables, and function error handling

• Starship prompt integration

• Critical stability fixes for .hashrc sourcing and interactive sessions

Hash is free, open-source, and actively developed.