Hello, @vasile-caraus,
You can download some GNU tools for Win32 from the link, below :
https://code.google.com/p/gnu-on-windows/downloads/list
( The downloaded GAWK version is v4.1.0 )
The GAWK documentation may be downloaded, from the link :
http://www.gnu.org/software/gawk/manual/
@vasile-caraus, GAWK software is a very very powerful Unix tool, but you’ll need some time, even to learn basic functions. For instance, the PDF Reference manual is a 540 pages file ! But, I’m sure it won’t take you much time to “Google search” an short introduction to the GAWK tool !!
Cheers,
guy038