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A.4 Extensions in Brian Kernighan’s awk

Brian Kernighan has made his version available via his home page (see Other Freely Available awk Implementations).

This section describes common extensions that originally appeared in his version of awk:

• The ‘**’ and ‘**=’ operators (see Arithmetic Operators and Assignment Expressions)
• The use of func as an abbreviation for function (see Function Definition Syntax)
• The fflush() built-in function for flushing buffered output (see Input/Output Functions)

See Common Extensions Summary for a full list of the extensions available in his awk.