The earliest shell had most of these! [1][2] Arguments, parameters, pattern matching, redirection, piping. Surprisingly, this wasn't enough so Bourne became d

The earliest shell had most of these! [1][2] Arguments, parameters, pattern matching, redirection, piping. Surprisingly, this wasn't enough so Bourne became defacto in Unix v7. Indeed, Thompson shell was small and clean, but it wasn't a spartan as you might think. [1] https://en.wikipedia.org/wiki/Thompson_shell https://en.wikipedia.org/wiki/Thompson_shell [2] http://man.cat-v.org/unix-1st/1/sh http://man.cat-v.org/unix-1st/1/sh [3] https://en.wikipedia.org/wiki/Bourne_shell https://en.wikipedia.org/wiki/Bourne_shell