rc is the command line interpreter for Version 10 Unix, Plan 9, and Inferno operating systems. It resembles the Bourne shell, but its syntax is somewhat simpler. It was created by Tom Duff, who is better known for an unusual C programming language construct called Duff's device. A programming paradigm is a paradigmatic style of programming (compare with a methodology, which is a paradigmatic style of doing software engineering). ... In computing, a shell is a piece of software that provides an interface for users (command line interpreter). ... 1989 (MCMLXXXIX) was a common year starting on Sunday of the Gregorian calendar. ... Thomas Douglas Selkirk Duff (b. ... A software developer is a person who is concerned with one or more facets of the software development process, a somewhat broader scope of computer programming or a specialty of project managing. ... Bell Laboratories (also known as Bell Labs and formerly known as AT&T Bell Laboratories and Bell Telephone Laboratories) was the main research and development arm of the United States Bell System. ... In computer science, a type system defines how a programming language classifies values and expressions into types, how it can manipulate those types and how they interact. ... In computing, weak typing, when applied to a programming language, is used to describe how the language handles datatypes. ... Look up Implementation in Wiktionary, the free dictionary. ... Tenth Edition Unix, also known as Version 10 Unix or V10, was the last version of the Research Unix operating system developed and used internally at Bell Labs. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Inferno is an operating system for creating and supporting distributed services. ... Plan 9 from User Space (aka plan9port) is a port of many Plan 9 libraries and applications to Unix-like operating systems. ... The Bourne shell, or sh, was the default Unix shell of Unix Version 7, and replaced the Thompson shell, whose executable file had the same name, sh. ... The es shell is a Unix shell that uses the a scripting language similar to the rc shell. ... A command line interpreter is a computer program which reads lines of text that the user types and interprets them in the context of a given operating system or programming language. ... Tenth Edition Unix, also known as Version 10 Unix or V10, was the last version of the Research Unix operating system developed and used internally at Bell Labs. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Inferno is an operating system for creating and supporting distributed services. ... An operating system (OS) is a set of computer programs that manage the hardware and software resources of a computer. ... The Bourne shell, or sh, was the default Unix shell of Unix Version 7, and replaced the Thompson shell, whose executable file had the same name, sh. ... Thomas Douglas Selkirk Duff (b. ... C is a general-purpose, procedural, imperative computer programming language developed in 1972 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system. ... In computer science, Duffs Device is an optimized implementation of a serial copy that uses a technique widely applied in assembly language for loop unwinding. ...

A rewrite of rc for Unix-like operating systems by Byron Rakitzis is also available but includes some incompatible changes. A port of the original rc to Unix is part of Plan 9 from User Space Diagram of the relationships between several Unix-like systems A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification. ... Plan 9 from User Space (aka plan9port) is a port of many Plan 9 libraries and applications to Unix-like operating systems. ...

See also

• command line interface
• Unix shell

This article or section does not adequately cite its references or sources. ... Screenshot of a sample Bash session, taken on Gentoo Linux. ...

External links

• "Rc - The Plan 9 Shell"
• Plan 9 rc manual page
• Unix port of rc