Learning AWK Programming: A fast, and simple cutting-edge utility for text-processing on the Unix-like environment

Text processing and pattern matching simplifiedKey FeaturesMaster the fastest and most elegant big data munging languageImplement text processing and pattern matching using the advanced features of AWK and GAWKImplement debugging and inter-process communication using GAWKBook DescriptionAWK is one of the most primitive and powerful utilities which exists in all Unix and Unix-like distributions. It is used as a command-line utility when performing a basic text-processing operation, and as programming language when dealing with complex text-processing and mining tasks. With this book, you will have the required expertise to practice advanced AWK programming in real-life examples. The book starts off with an introduction to AWK essentials. You will then be introduced to regular expressions, AWK variables and constants, arrays and AWK functions and more. The book then delves deeper into more complex tasks, such as printing formatted output in AWK, control flow statements, GNU's implementation of AWK covering the advanced features of GNU AWK, such as network communication, debugging, and inter-process communication in the GAWK programming language which is not easily possible with AWK. By the end of this book, the reader will have worked on the practical implementation of text processing and pattern matching using AWK to perform routine tasks.What you will learnCreate and use different expressions and control flow statements in AWKUse Regular Expressions with AWK for effective text-processingUse built-in and user-defined variables to write AWK programsUse redirections in AWK programs and create structured reportsHandle non-decimal input, 2-way inter-process communication with GawkCreate small scripts to reformat data to match patterns and process textsWho This Book Is ForThis 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.Table of ContentsGetting started with Awk ProgrammingWorking with Regular ExpressionsAwk Variables and ConstantWorking with Arrays in AwkPrinting Output in AwkAwk ExpressionsAwk Control Flow StatementsAwk FunctionsGnu's Implementation of Awk - Gawk (GNU Awk)Practical Implementation of Awk