Yet another shell (yash) is a POSIX-compliant command line shell, featuring more strict POSIX compliance than those of other shells, as well as powerful command line editing.
So far most of yash's features have been implemented, but command line editing is still under development.
You can download file releases of Yet Another Shell project from here.
System Requirements
Operating System: POSIX (Linux,BSD,Solaris etc..) Any POSIX.1-2001 environment with the Software Development Utilities and the C-Language Development Utilities options