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Korn Shell Programming by Example
book

Korn Shell Programming by Example

by Dennis O'Brien
February 2001
Beginner to intermediate
448 pages
9h 2m
English
Que
Content preview from Korn Shell Programming by Example

Self-Help Scripts

As my mind gets more cluttered with UNIX commands and other technical flotsam, my ability to remember the expected syntax of a particular command or script becomes limited.

One of the techniques I use to quickly recall which options are legitimate and what the order of the parameters is supposed to be is to type the command with no other syntax. Usually this is incorrect for the command or script in question. If the script has been designed with self-help in mind, it displays a little syntax reminder onscreen. This functions as a mini man page, as you can see in the following example.

You can alternatively set up your script to react to a parameter of ? or -help.

$ gcdksh
Usage: gcdksh {integer_1}  {integer_2}  ...
$
				
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Publisher Resources

ISBN: 0789724650Purchase book