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About the Book

This book heavily leans on examples to present options and features of awk as well as regular expressions one by one. It is recommended that you manually type each example and experiment with them. Understanding both the nature of sample input string and the output produced is essential.

You should have prior experience working with command line and bash shell, should know concepts like file redirection, command pipeline and so on. You should also be familiar with programming concepts like variables, printing, functions, control structures, arrays, etc. Knowing basics of grep and sed will help in understanding similar features of awk.

Exercises are also included to test your understanding.

Visit https://github.com/learnbyexample/learn_gnuawk for code snippets and example files used in this book. The repo also has solutions for exercises.

Testimonials

Step up your cli fu with this fabulous intro & deep dive into awk. I learned a ton of tricks! — feedback on twitter

About the Author

Sundeep Agarwal’s avatar Sundeep Agarwal

@learn_byexample

Sundeep Agarwal is a lazy being who prefers to work just enough to support his modest lifestyle. He accumulated vast wealth working as a Design Engineer at Analog Devices and retired from the corporate world at the ripe age of twenty-eight. Unfortunately, he squandered his savings within a few years and had to scramble trying to earn a living. Against all odds, selling programming ebooks saved his lazy self from having to look for a job again. He can now afford all the fantasy ebooks he wants to read and spends unhealthy amount of time browsing the internet.

When the creative muse strikes, he can be found working on yet another programming ebook (which invariably ends up having at least one example with regular expressions). Researching materials for his ebooks and everyday social media usage drowned his bookmarks, so he maintains curated resource lists for sanity sake. He is thankful for free learning resources and open source tools. His own contributions can be found at https://github.com/learnbyexample.

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