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The Bourne shell (sh) is a shell command-line interpreter for computer operating systems.It first appeared on Version 7 Unix, as its default shell. Unix-like systems continue to have /bin/sh—which will be the Bourne shell, or a symbolic link or hard link to a compatible shell—even when other shells are used by most users.
The PWB shell, written by John R. Mashey, which preceded Steve Bourne's Bourne shell; The restricted shell (rsh), an option of the PWB shell, used to create widely-available logins for status-checking, trouble-reporting, but made safe by restricting commands; The troff-mm (memorandum) macro package, written by John R. Mashey and Dale W. Smith
Bash, short for Bourne-Again SHell, is a shell program and command language supported by the Free Software Foundation [2] and first developed for the GNU Project [3] by Brian Fox. [4] Designed as a 100% [ 5 ] free software alternative for the Bourne shell , [ 6 ] [ 7 ] [ 8 ] it was initially released in 1989. [ 9 ]
Stephen Richard "Steve" Bourne (born 7 January 1944) is an English computer scientist based in the United States for most of his career. He is well known as the author of the Bourne shell ( sh ), which is the foundation for the standard command-line interfaces to Unix .
The Heirloom Project is a collection of traditional Unix utilities. Most of them are derived from original Unix source code, as released as open-source by Caldera and Sun. [1] ...
The Z shell (Zsh) is a Unix shell that can be used as an interactive login shell and as a command interpreter for shell scripting. Zsh is an extended Bourne shell with many improvements, including some features of Bash, ksh, and tcsh. Zsh was created by Paul Falstad in 1990 while he was a student at Princeton University.
The type command was a shell builtin for Bourne shell that was introduced in AT&T's System V Release 2 (SVR2) in 1984, [1] and continues to be included in many other POSIX-compatible shells such as Bash. However, type is not part of the POSIX standard. With a POSIX shell, similar behavior is retrieved with command -V name
The MKS Toolkit products offer functionality in the following areas: Command shell environments of Bourne shell, KornShell, Bash, C shell, Tcl shell; Traditional Unix commands (400+), including grep, awk, sed, vi, ls, kill [4]