Almquist Shell: Difference between revisions
(Give a brief description. List the three major variants.) |
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== See also == |
== See also == |
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* [[wp:Almquist shell]], Wikipedia's article |
* [[wp:Almquist shell|Almquist shell]], Wikipedia's article |
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* [http://www.in-ulm.de/~mascheck/various/ash/ Ash (Almquist Shell) Variants], a history of many Ash versions and their features |
* [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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Revision as of 14:40, 20 November 2011
Almquist Shell is a minimal implementation of a POSIX shell, and also a replacement for 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 local command. Almquist Shell is the default shell, /bin/sh, of some systems.
Almquist Shell filled the need for a free shell to replace Bourne Shell. Kenneth Almquist posted 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 /bin/sh, added features from POSIX, and put a Berkeley copyright on this shell.
Almquist variants
Ash has three major variants:
All three variants have similar features. Dash can run on GNU/Linux.
See also
- Almquist shell, Wikipedia's article
- Ash (Almquist Shell) Variants, a history of many Ash versions and their features