A.4 Extensions in Brian Kernighan’s awk

Brian Kernighan has made his version available via his home page (see Other Versions).

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

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

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