(gawk) Built-in

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(gawk) User-defined

 
 Built-in Functions
 ******************
 
    "Built-in" functions are functions that are always available for
 your `awk' program to call.  This chapter defines all the built-in
 functions in `awk'; some of them are mentioned in other sections, but
 they are summarized here for your convenience.  (You can also define
 new functions yourself.   User-defined Functions User-defined.)
 

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* Calling Built-in            How to call built-in functions.
* Numeric Functions           Functions that work with numbers, including
                                 `int', `sin' and `rand'.
* String Functions            Functions for string manipulation, such as
                                 `split', `match', and
                                 `sprintf'.
* I/O Functions               Functions for files and shell commands.
* Time Functions              Functions for dealing with time stamps.
 

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