Executables of the latest version, 2.15.2, of gawk text processing
language/utility (GNU version of awk) were posted to
atari.archive.umich.edu. They contain some basic docs, but a full
version of a very informative manual (some 250 pages, or so) can
be found, with sources, in a regular GNU distribution of gawk.
To take a full advantage of MiNT you will have to recompile (which
is not a problem as long as you have an ANSI compiler). Posted program
should work 'as-is' anyway.