what is the command line interface shells for a freeware functional clone of sh, with parts of ksh, bash and full POSIX compliance, and many new interactive command-line editing features. It was installed as the default shell on early MacOSX systems.
The command line interface shell you are referring to is called "zsh" (Z Shell). It was developed by Paul Falstad in 1990 as a freeware functional clone of sh, with parts of ksh, bash and full POSIX compliance, and many new interactive command-line editing features. It was installed as the default shell on early MacOSX systems.
