Louis Pouzin

Louis Pouzin (born 1931 in Chantenay-Saint-Imbert, Nièvre, France) is a French computer scientist. He designed an early packet communications network, CYCLADES.
This network was the first actual implementation of the pure datagram model, initially imagined and described by Donald Davies, subsequently named by Halvor Bothner-By, and seen by Louis Pouzin as his personal invention.
His work, and that of his colleagues Hubert Zimmerman and Gérard Le Lann, were acknowledged by Vinton Cerf as substantial contributions to the design of TCP/IP, the protocol suite used by the Internet.
Biography.
He studied at the École Polytechnique from 1950 to 1952.
Having participated in the design of the Compatible Time-Sharing System (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 the one who coined the term "shell" for a command language in 1964 or 1965. Pouzin's concepts were later implemented in Multics by Glenda Schroeder at MIT. Schroeder developed the first Multics shell with the assistance of an unnamed man from General Electric. Schroeder's Multics shell was the predecessor to the Unix shell, which is still in use today.
From 1967 to 1969 Pouzin developed one operating system for Météo-France, the French national meteorological service, using CDC 6400 as hardware. This system was created for weather forecast and statistics and was used for 15 years.
Pouzin directed the pioneering CYCLADES networking project from 1971 to 1976. Building on Donald Davies’s simulation of datagram networks, Pouzin built the CIGALE packet switching network. CYCLADES used a layered architecture, as did the Internet later, to research internetworking concepts.
He participated in the International Networking Working Group from 1972, initially chaired by Vint Cerf. He was acknowledged by Bob Kahn and Cerf in their 1974 paper on internetworking protocols, "A Protocol for Packet Network Intercommunication".
In 2002 Pouzin, along with Jean-Louis Grangé, Jean-Pierre Henninot and Jean-François Morfin, participated in the creation of Eurolinc, which is a non-profit association that promotes multilingualism in domain names. In June 2003, Eurolinc was accredited by UNO to participate at the World Summit on the Information Society (WSIS).
In November 2011, he founded Savoir-Faire, an alternative root company, with Chantal Lebrument and Quentin Perrigueur.
In 2012 he developed a service called Open-Root, which is dedicated to sell top-level domains (TLD) in all scripts outside of ICANN. This way people can develop second-level domains for free.