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User-defined Functions
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Complicated `awk' programs can often be simplified by defining your
own functions. User-defined functions can be called just like built-in
ones (see Function Calls.), but it is up to you to define them--to
tell `awk' what they should do.
Menu
- Definition Syntax
- How to write definitions and what they mean.
- Function Example
- An example function definition and
what it does.
- Function Caveats
- Things to watch out for.
- Return Statement
- Specifying the value a function returns.