gawk: Common Extensions
A.7 Common Extensions Summary
=============================
The following table summarizes the common extensions supported by
'gawk', Brian Kernighan's 'awk', and 'mawk', the three most widely used
freely available versions of 'awk' (
Other Versions).
Feature BWK 'awk' 'mawk' 'gawk' Now standard
--------------------------------------------------------------------------
'\x' escape sequence X X X
'FS' as null string X X X
'/dev/stdin' special file X X X
'/dev/stdout' special file X X X
'/dev/stderr' special file X X X
'delete' without subscript X X X X
'fflush()' function X X X X
'length()' of an array X X X
'nextfile' statement X X X X
'**' and '**=' operators X X
'func' keyword X X
'BINMODE' variable X X
'RS' as regexp X X
Time-related functions X X
Info Catalog
gawk: Feature History
gawk: Language History
gawk: Ranges and Locales