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

   This manual describes the GNU implementation of `awk', which is
patterned after the POSIX specification.  Many `awk' users are only
familiar with the original `awk' implementation in Version 7 Unix,
which is also the basis for the version in Berkeley Unix (through
4.3-Reno).  This chapter briefly describes the evolution of the `awk'
language.

Menu

V7/S5R3.1

The major changes between V7 and System V Release 3.1.

S5R4

Minor changes between System V Releases 3.1 and 4.

POSIX

New features from the POSIX standard.

POSIX/GNU

The extensions in `gawk' not in POSIX `awk'.