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Mastering Linux Shell Scripting

You're reading from   Mastering Linux Shell Scripting Master the complexities of Bash shell scripting and unlock the power of shell for your enterprise

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Product type Paperback
Published in Dec 2015
Publisher
ISBN-13 9781784396978
Length 198 pages
Edition 1st Edition
Tools
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Author (1):
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Andrew Mallett Andrew Mallett
Author Profile Icon Andrew Mallett
Andrew Mallett
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Table of Contents (16) Chapters Close

Preface 1. What and Why of Scripting with Bash 2. Creating Interactive Scripts FREE CHAPTER 3. Conditions Attached 4. Creating Code Snippets 5. Alternative Syntax 6. Iterating with Loops 7. Creating Building Blocks with Functions 8. Introducing sed 9. Automating Apache Virtual Hosts 10. Awk Fundamentals 11. Summarizing Logs with Awk 12. A Better lastlog with Awk 13. Using Perl as a Bash Scripting Alternative 14. Using Python as a Bash Scripting Alternative Index

Summary


Another great chapter that you have firmly under your belt and I hope this was really useful to you. Although, we want to concentrate on using sed, we started with how powerful grep can be both inside and outside our scripts. This led us to the Regular Expressions before taking a look at just a few of the possibilities of sed. Although, we have only just touched sed, we will start extending this in the next chapter were we will expand upon what we have learned. This will take the form of scripting Apache Virtual Hosts by first extracting commented data from the current configuration, uncommenting and writing it to a template. We can then use the template to create new Virtual Hosts. The workhorse of all these operations will be sed and sed scripts.

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