Mr. Louis Pouzin

Invented the datagram and designed the first packet communications network, CYCLADES. He also created the first forms of command-line interface. His work was broadly used by Robert Kahn, Vinton Cerf, and many others in the development of Internet and TCP/IP under DARPA Director Stephen Lukasik. Having participated in the design of CTSS, Pouzin wrote a program called RUNCOM around 1963/64. RUNCOM permitted the execution of contained commands within a folder, and can be considered the ancestor of the command-line interface and shell scripts. Pouzin was, in fact, the one who introduced the term shell for the command language used in Multics and defined the principles Glenda Schroeder at MIT used.