The GNU Awk User’s Guide

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General Introduction

This file documents awk, a program that you can use to select particular records in a file and perform operations upon them.

Copyright © 1989, 1991, 1992, 1993, 1996–2005, 2007, 2009–2014
Free Software Foundation, Inc.



This is Edition 4.1 of GAWK: Effective AWK Programming: A User’s Guide for GNU Awk, for the 4.1.1 (or later) version of the GNU implementation of AWK.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with the Invariant Sections being “GNU General Public License”, the Front-Cover texts being (a) (see below), and with the Back-Cover Texts being (b) (see below). A copy of the license is included in the section entitled “GNU Free Documentation License”.

  1. “A GNU Manual”
  2. “You have the freedom to copy and modify this GNU manual. Buying copies from the FSF supports it in developing GNU and promoting software freedom.”

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