This web page is also available in 日本語. Yash 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. Notable features are: Global aliases Arrays Socket redirection, pipeline redirection, and process redirection Brace expa