Overview
- Explore how to use shell parameters to replace many external commands making scripts run faster
- Learn to avoid many common mistakes that cause scripts to fail
- Fully updated and expanded to include Bash 5.2
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About this book
Learn how to effectively utilize the Bash shell in your programming. This refreshed and expanded third edition has been updated to Bash 5.2, and many scripts have been rewritten to make them more idiomatically Bash, taking better advantage of features specific to Bash. It is easy to read, understand, and will teach you how to get to grips with Bash programming without drowning you in pages and pages of syntax.
Using this book you will be able to use the shell efficiently, make scripts run faster using expansion and external commands, and understand how to overcome many common mistakes that cause scripts to fail. This book is perfect for all beginning Linux and Unix system administrators who want to be in full control of their systems, and really get to grips with Bash programming.
The Bash shell is a complete programming language, not merely a glue to combine external Linux commands. By taking full advantage of Shell internals, Shell programs can perform as snappily as utilities written in C or other compiled languages. And you will see how, without assuming UNIX lore, you can write professional Bash programs through standard programming techniques.
What You'll Learn
- Use the Bash shell to write utilities and accomplish most programming tasks
- Replace many external commands with shell parameter expansion making scripts very fast
- Avoid many common mistakes that cause scripts to fail
- See how Bash’s read line and history libraries can save typing when getting user input
- Build shell scripts that get information from the Web
Who This Book Is For
Developers, programmers, and open source enthusiasts who want to write scripts using Bash on multiple platforms
Keywords
Table of contents (15 chapters)
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Front Matter
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Back Matter
Reviews
“This is an excellent reference book for those who need to write Bash scripts. It is well organized, logically presented, and covers all the major commands and structures that are necessary to write useful scripts. … Each chapter ends with a summary, a list of the commands introduced, and some exercises for the reader to try in order to practice the skills they have just learned.” (Michael Oudshoorn, Computing Reviews, February 15, 2024)
Authors and Affiliations
About the author
Chris F.A. Johnson was introduced to Unix in 1990 and learned shell scripting because there was no C compiler on the system. His first major project was a menu-driven, user-extensible database system with report generator. Chris is now retired and currently resides in Toronto, Canada.
Bibliographic Information
Book Title: Pro Bash
Book Subtitle: Learn to Script and Program the GNU/Linux Shell
Authors: Jayant Varma
DOI: https://doi.org/10.1007/978-1-4842-9588-5
Publisher: Apress Berkeley, CA
eBook Packages: Professional and Applied Computing, Apress Access Books, Professional and Applied Computing (R0)
Copyright Information: Jayant Varma, Chris F. A. Johnson 2023
Softcover ISBN: 978-1-4842-9587-8Published: 08 November 2023
eBook ISBN: 978-1-4842-9588-5Published: 07 November 2023
Edition Number: 3
Number of Pages: XXI, 305
Number of Illustrations: 12 b/w illustrations
Topics: Open Source, Software Engineering/Programming and Operating Systems