Book Image

Mastering Linux Shell Scripting - Second Edition

By : Mokhtar Ebrahim, Andrew Mallett
5 (1)
Book Image

Mastering Linux Shell Scripting - Second Edition

5 (1)
By: Mokhtar Ebrahim, Andrew Mallett

Overview of this book

In this book, you’ll discover everything you need to know to master shell scripting and make informed choices about the elements you employ. Grab your favorite editor and start writing your best Bash scripts step by step. Get to grips with the fundamentals of creating and running a script in normal mode, and in debug mode. Learn about various conditional statements' code snippets, and realize the power of repetition and loops in your shell script. You will also learn to write complex shell scripts. This book will also deep dive into file system administration, directories, and system administration like networking, process management, user authentications, and package installation and regular expressions. Towards the end of the book, you will learn how to use Python as a BASH Scripting alternative. By the end of this book, you will know shell scripts at the snap of your fingers and will be able to automate and communicate with your system with keyboard expressions.
Table of Contents (17 chapters)

Summary

Another great chapter that you have firmly under your belt and I hope it was really useful to you. Although we wanted to concentrate on using sed, we started with how powerful grep can be, both inside and outside our scripts. Although we have only just touched on sed, we will start extending this in the next chapter, where we will expand upon what we have learned.

Also, we learned how to substitute text and how to limit and globalize the substitution and how to save the editing stream using -i.

We learned how to insert, append, delete, and transform text using sed.

Finally, we learned how to run multiple sed commands using the -e option.

In the next chapter, we will learn how to automate Apache Virtual Hosts, how to create new virtual hosts automatically, and other cool stuff. The workhorse of all these operations will be sed and sed scripts.

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