---

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.