Images of shells by the sea

Yash – yet another shell

Yash, yet another shell, is a POSIX-compliant command line shell written in C99 (ISO/IEC 9899:1999).

Yash is intended to be the most POSIX-compliant shell in the world while supporting features for daily interactive and scripting use.

This is free and open source software.

Key Features

  • Global aliases.
  • Arrays.
  • Socket redirection, pipeline redirection, and process redirection.
  • Brace expansion and extended globbing.
  • Fractional numbers in arithmetic expansion.
  • Prompt command and command-not-found handler.
  • Command line completion with predefined completion scripts for more than 100 commands.
  • Command line prediction based on command history.

Website: magicant.github.io/yash
Support: GitHub Code Repository
Developer: WATANABE Yuki
License: GNU General Public License v2.0

Yash is written in C. Learn C with our recommended free books and free tutorials.


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Read our verdict in the software roundup.


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