The Caml Hump: Cash

Cash is a Unix shell that is embedded within Objective Caml. It's a Caml implementation of (an as large as possible subset of) the API of Scsh, the Scheme Shell by Olin Shivers. The Scsh API is designed for writing useful standalone Unix programs and shell scripts (but rather not for interactive command use). It spans a wide range of application, from “script” applications usually handled with perl or sh, to more standard systems applications usually written in C.