GNU Info

(gawk.info)Language History

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The Evolution of the `awk' Language
***********************************

   This Info file describes the GNU implementation of `awk', which
follows the POSIX specification.  Many long-time `awk' users learned
`awk' programming with the original `awk' implementation in Version 7
Unix.  (This implementation was the basis for `awk' in Berkeley Unix,
through 4.3-Reno.  Subsequent versions of Berkeley Unix, and systems
derived from 4.4BSD-Lite, use various versions of `gawk' for their
`awk'.)  This major node briefly describes the evolution of the `awk'
language, with cross references to other parts of the Info file where
you can find more information.

V7/SVR3.1

The major changes between V7 and System V

Release 3.1.

SVR4

Minor changes between System V Releases 3.1

and 4.

POSIX

New features from the POSIX standard.

BTL

New features from the Bell Laboratories

version of `awk'.

POSIX/GNU

The extensions in `gawk' not in POSIX

`awk'.

Contributors

The major contributors to `gawk'.