Learning AWK Programming

A fast, small and simple Cutting-edge Utility for text-processing on Unix-like environmentAbout This Book * Get well-versed with the fastest and most elegant big data munging lanuage * Implement Unix-scripting programs to carry out text processing using the advance features of AWK and gawk * A fast-paced guide with easy-to-follow examples to carry out different operations such as manipulations, text processing, pattern matching and more Who This Book Is For This book is for developers or analysts who are inclined to learn how to do text processing and data extraction in a Unix-like environment. Basic understanding of Linux operating system and shell scripting will help you to get the most out of the book.What You Will Learn * Use Regular Expressions with Awk for text-processing effectively. * Use built-in and user-defined variables while writing AWK program and Command lines * Learn to use redirections in AWK program and create structured reports using AWK. * Handle non-decimal input, 2-way interprocess communication with Gawk * Create small scripts for data reformatting using awk for Pattern Matching and Text Processing. In Detail AWK is one of the most primitive & powerful utility which exists in all Unix and Unix-like distributions. It is used as command line utility for performing a basic text-processing operation and as programming language when dealing with complex text-processing and mining tasks.The best feature about AWK is, it is a data-driven language where you describe the data you wish to work with, and the set of actions you want to perform in case of pattern match. This book will provide you with the rundown explaining the required concept which will help you in getting started with AWK covering every element of functions, variables and more. The book starts off with the introduction of AWK language essentials. The readers are then introduced to Regular Expressions, AWK variables& constant, arrays and AWK Functions. The book then dives deeper into more complex tasks like printing output in AWK, control flow statements, GNU's implementation of AWK covering the advanced features of GNU AWK like Network Communication, Debugging and Inter-process communication in Gawk Programming language which is not easily possible with AWK. By the end of this book, the reader will have the chance to work on the practical implementation of Text Processing and Pattern matching using Awk and the cheat sheet for performing routine tasks.