This Web page describes the GNU implementation of
awk, which follows
the POSIX specification.
awk users learned
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 some systems
derived from 4.4BSD-Lite, use various versions of
This chapter briefly describes the
evolution of the
awk language, with cross-references to other parts
of the Web page 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 Brian Kernighan’s version of
|• POSIX/GNU:||The extensions in |
|• Feature History:||The history of the features in |
|• Common Extensions:||Common Extensions Summary.|
|• Ranges and Locales:||How locales used to affect regexp ranges.|
|• Contributors:||The major contributors to |