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Almquist Shell: Difference between revisions
Give a brief description. List the three major variants.
m (→See also: Connect a link; 'dash' does not exist at this time.) |
(Give a brief description. List the three major variants.) |
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'''Almquist Shell''' is a minimal implementation of a [[POSIX]] shell, and also a replacement for [[compatible with::Bourne Shell]]. Almquist Shell has more features than Bourne Shell, but fewer features than most other shells. (No arrays!) Almquist Shell only implements POSIX features, plus a few [[BSD]] traditions, like its <code>local</code> command. Almquist Shell is the default shell, <code>/bin/sh</code>, of some systems.
[[wp:Almquist shell]]▼
Almquist Shell filled the need for a free shell to replace Bourne Shell. Kenneth Almquist posted [http://groups.google.com/group/comp.sources.unix/msg/2774e7653a8e6274 the first version of Ash] to Usenet group comp.sources.unix at 30 May 1989. It was a clone of SVR3 Bourne Shell. [[BSD]] used Ash for <code>/bin/sh</code>, added features from POSIX, and put a Berkeley copyright on this shell.
==
Ash has three major variants:
* [[Debian Almquist Shell]] (Dash)▼
* [http://svnweb.freebsd.org/base/head/bin/sh/ FreeBSD /bin/sh]
* [http://cvsweb.netbsd.org/bsdweb.cgi/src/bin/sh/?only_with_tag=MAIN NetBSD /bin/sh]
All three variants have similar features. Dash can run on GNU/Linux.
== See also ==▼
▲== See also ==
▲[[Debian Almquist Shell]]
▲* [[wp:Almquist shell]], Wikipedia's article
* [http://www.in-ulm.de/~mascheck/various/ash/ Ash (Almquist Shell) Variants], a history of many Ash versions and their features
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