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Learning Linux Shell Scripting

You're reading from   Learning Linux Shell Scripting Leverage the power of shell scripts to solve real-world problems

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Product type Paperback
Published in May 2018
Publisher Packt
ISBN-13 9781788993197
Length 332 pages
Edition 2nd Edition
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Author (1):
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Ganesh Sanjiv Naik Ganesh Sanjiv Naik
Author Profile Icon Ganesh Sanjiv Naik
Ganesh Sanjiv Naik
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Table of Contents (17) Chapters Close

Preface 1. Getting Started and Working with Shell Scripting 2. Drilling Deep into Process Management, Job Control, and Automation FREE CHAPTER 3. Using Text Processing and Filters in Your Scripts 4. Working with Commands 5. Exploring Expressions and Variables 6. Neat Tricks with Shell Scripting 7. Performing Arithmetic Operations in Shell Scripts 8. Automating Decision-Making in Scripts 9. Automating Repetitive Tasks 10. Working with Functions 11. Using Advanced Functionality in Scripts 12. System Startup and Customizing a Linux System 13. Pattern Matching and Regular Expressions with sed and awk 14. Taking Backup and Embedding Other Languages in Shell Scripts 15. Database Administration Using Shell Scripts 16. Other Books You May Enjoy

Using awk

awk is a program that has its own programming language for performing data-processing and generating reports.

The GNU version of awk is gawk.

awk processes data, which can be received from a standard input, input file, or as the output of any other command or process.

awk processes data similar to sed, line by line. It processes every line for the specified pattern and performs specified actions. If the pattern is specified, then all the lines containing specified patterns will be displayed. If pattern is not specified, then the specified actions will be performed on all the lines.

The meaning of awk

The name of the program awk is made from the initials of the three authors of the language, namely Alfred Aho, Peter...

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