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Learning AWK Programming

Learning AWK Programming

By : Kalkhanda
5 (4)
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Learning AWK Programming

Learning AWK Programming

5 (4)
By: Kalkhanda

Overview of this book

AWK 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.
Table of Contents (11 chapters)
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Summary

In this chapter we learned about different types elements of computation, that is, expressions in AWK. We learned how they are made up of different types of constants and variables. Then we learned about building different types of expressions using unary, binary, assignment, arithmetic, and Relational operators. Then we covered the ternary operator and string concatenation. Finally, we understood regular expression operators and their usage, followed by operator precedence.

In the next chapter, we will learn about the usage of different control flow statements in AWK programs.

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