Category:UNIX Shell: Difference between revisions
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=Implementation=
The UNIX Shell may be implemented by any of a wide variety of programs. Notable programs used as shells include the [[Bourne
=Language=
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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 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
#!/bin/sh
This line tells the operating system to use the [[Bourne Again SHell]]:
#!/bin/bash
And this one tells the operating system to use the [[Korn
#!/bin/ksh
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