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Correct spelling.

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rosettacode>Shlomif

Revision as of 03:41, 8 November 2007 (view source) MikeMol (talk \| contribs) (Added Programming Language template) ← Older edit		Latest revision as of 17:13, 20 April 2017 (view source) rosettacode>Shlomif m (Correct spelling.)
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Line 1: {{language {{Programming Language}}The '''UNIX Shell''' is a component of terminal-based UNIX-derived systems which offers both a command-line interface for running system commands, as well as programming interface for intelligently automating tasks which use system commands.▼ \|exec=interpreted \|tags=bash \|hopl id=568 ▲~~{{Programming Language~~}}The '''UNIX Shell''' is a component of terminal-based [[UNIX]]-derived systems which offers both a command-line interface for running system commands, as well as programming interface for intelligently automating tasks which use system commands. =Implementation= There are many UNIX Shells and most of them can be categorized into two families. For purposes of the ~~Rosette~~Rosetta Code, all examples are in Bourne-compatible syntax. The other family of shells, with a markedly different syntax, are ''csh'' ([[:Category:C Shell\|C Shell]]) and ~~it's~~its ''tcsh'' (Tenex C Shell) "clone." Common Bourne compatible shells include the original [[Bourne Shell]] (''/bin/sh'' on most versions of UNIX), the GNU [[Bourne Again SHell]] (''bash'' --- which is linked to ''/bin/sh'' on many distributions of [[Linux]], making it their default shell), the [[Korn Shell]] (''ksh''), the [[Public Domain Korn SHell]] (''pdksh''), the [[Almquist SHell]] (''ash'') and the [[Debian Almquist SHell]] (''dash'') and the [[Z SHell]] (''zsh''). Line 10 ⟶ 14: =Language= While UNIX Shells vary in the programming languages they support, such languages carry a minimum set of features. Each language allows the programmer to [[Execute a System Command\|execute system commands]] as though he were typing the commands himself, and each language allows for a header line which specifies which shell implementation is used to interpret the script. This one tells the operating system to use the [[Bourne Shell]]: Line 19 ⟶ 23: #!/bin/ksh Each header line consists of a hash, a bang, and the path to the [[interpreter]] binary.