Louis Pouzin
Encyclopedia
Louis PouzinLouis Pouzin (born 1931 in Chantenay-Saint-Imbert
Chantenay-Saint-Imbert
Chantenay-Saint-Imbert is a commune in the Nièvre department in central France.-References:*...

, Nièvre
Nièvre
Nièvre is a department in the centre of France named after the Nièvre River.-History:Nièvre is one of the original 83 departments created during the French Revolution on March 4, 1790...

, France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

) invented the datagram
Datagram
A datagram is a basic transfer unit associated with a packet-switched network in which the delivery, arrival time, and order are not guaranteed....

 and designed an early packet communications network, CYCLADES
CYCLADES
The CYCLADES packet switching network was a French research network created in the early 1970s. It was developed to explore alternatives to the ARPANET design and to support network research generally...

. He also created the first forms of command-line interface.

His work was broadly used by Robert Kahn
Bob Kahn
Robert Elliot Kahn is an American Internet pioneer, engineer and computer scientist, who, along with Vinton G. Cerf, invented the Transmission Control Protocol and the Internet Protocol , the fundamental communication protocols at the heart of the Internet.-Career:After receiving a B.E.E...

, Vinton Cerf, and many others in the development of Internet
Internet
The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite to serve billions of users worldwide...

 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 coined the term shell
Shell (computing)
A shell is a piece of software that provides an interface for users of an operating system which provides access to the services of a kernel. However, the term is also applied very loosely to applications and may include any software that is "built around" a particular component, such as web...

for a command language language in 1964 or '65.. Pouzin's concepts were later implemented in Multics
Multics
Multics was an influential early time-sharing operating system. The project was started in 1964 in Cambridge, Massachusetts...

 by Glenda Schroeder
Glenda Schroeder
Glenda Schroeder is an American software engineer who implemented the first "shell" for the Multics operating system . She also described the first e-mail implementation in 1964-65 for a system of notifying users about backups of files....

 at MIT.

Louis Pouzin was named a Chevalier of the Legion of Honor by the French government on March 19, 2003.

External links

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