Unix shell created by Bill Joy while he was a graduate student at University of California, Berkeley in the late 1970s.- C shell
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A command-line interpreter or command-line processor uses a command-line interface (CLI) to receive commands from a user in the form of lines of text.
Examples of command-line interpreters include DEC's DIGITAL Command Language (DCL) in OpenVMS and RSX-11, the various Unix shells (sh, ksh, csh, tcsh, zsh, Bash, etc.), CP/M's CCP, DOS' COMMAND.COM, as well as the OS/2 and the Windows CMD.EXE programs, the latter groups being based heavily on DEC's RSX-11 and RSTS CLIs.
Command-line interpreter or shell that provides a command line user interface for Unix-like operating systems.
But the most widely distributed and influential of the early Unix shells were the Bourne shell and the C shell.
Computer program designed to be run by the Unix shell, a command-line interpreter.
The C shell
American computer engineer and venture capitalist.
Some of his most notable contributions were the ex and vi editors and the C shell.
Discontinued operating system based on Research Unix, developed and distributed by the Computer Systems Research Group (CSRG) at the University of California, Berkeley.
The second Berkeley Software Distribution (2BSD), released in May 1979, included updated versions of the 1BSD software as well as two new programs by Joy that persist on Unix systems to this day: the vi text editor (a visual version of ex) and the C shell.
Mechanism for inter-process communication using message passing.
In the csh shell, for instance, using instead of signifies that the standard error stream should also be merged with the standard output and fed to the next process.
Unix shell and command language written by Brian Fox for the GNU Project as a free software replacement for the Bourne shell.
Other features, e.g., history, are copied from csh and ksh.
tcsh ( “tee-see-shell”, “tee-shell”, or as “tee see ess aitch”, ) is a Unix shell based on and backward compatible with the C shell.
General-purpose computer programming language.
Shell command-line interpreter for computer operating systems.
The Korn shell (ksh) written by David Korn based on the original Bourne Shell source code, was a middle road between the Bourne shell and the C shell.