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Pro Bash Programming, Second Edition: Scripting the GNU/Linux Shell Paperback – Jun 16 2015

by Chris Johnson (Author),‎ Jayant Varma (Author)

4 reviews from Amazon.com |

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Pro Bash Programming teaches you how to effectively utilize the Bash shell in your 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 4.3 programs through standard programming techniques.

This second edition has updated for Bash 4.3, 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.

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Product details

Paperback: 256 pages
Publisher: Apress; 2nd ed. edition (June 15 2015)
Language: English
ISBN-10: 1484201221
ISBN-13: 978-1484201220
Product Dimensions: 17.8 x 1.5 x 25.4 cm
Shipping Weight: 567 g
Average Customer Review: Be the first to review this item
Amazon Bestsellers Rank: #737,465 in Books (See Top 100 in Books)
- #477 in Books > Computers & Technology > Operating Systems > Linux
- #906 in Books > Textbooks > Computer Science & Information Systems > Operating Systems
- #1139 in Books > Textbooks > Computer Science & Information Systems > Software Design & Engineering

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Product description

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 uses the shell as his primary, general-purpose programming language, and his projects have included a member database, menuing system, and POP3 mail filtering and retrieval. Chris is the author of Shell Scripting Recipes: A Problem-Solution Approach (Apress, 2005). When not pushing shell scripting to the limit, he designs and codes web sites, teaches chess, and composes cryptic crosswords.

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Amazon.com: 4 reviews

This Edition Is Under-rated

ByM.Vidrioon November 2, 2016 - Published on Amazon.com

I am surprised by the harsh reviews. I thought the material was well organized. I am not a bash newbie. I am a seasoned sysadmin with a programming background. While I don't think the authors (this was a revised book with a second author collaborating) did the best job of demonstrating how bash could be approached as a programming language, I did feel the material covered many of the finer points of bash. The minor details of the shell language are very important. I think the book could have included more examples, but it was well written. Perhaps a third edition could be restructured so that bash is portrayed outside of a scriting glue language and portrayed as a semi-programming language (it has programming features. For example the bash shell actually has a main function that is undeclared, like a C program). Bash, in my opinion is still a glue language because it isn't efficient when used as a standalone. For example, using bash to match text in a file is a heck of a lot slower than using grep. I will agree that bash scripts can be approached logically as a C/C++ file if you organize it as such, but nothing in the languge syntax forces such a structures approach. I agree that bash scripts wouldbe easier to read and troubleshot if bash scripting was approached this way.

6 people found this helpful.

The author makes the point that Bash Shell programming is true programming and can accomplish a great deal. He says that he uses

ByJim Curryon November 11, 2015 - Published on Amazon.com

People have different preferences when learning a language. The author makes the point that Bash Shell programming is true programming and can accomplish a great deal. He says that he uses it exclusively, resorting to C only when he needs the speed improvement offered by the compiled language, compared with the interpreted Bash scripts (programs). He gives a great deal of information and points out many subtle traps that people often fall into. I bought the book, and I intend to learn from it---regardless. I would have wanted a different book. I'd like to have both better, more crisply written, example tasks in which to learn the functioning of many commands. I'd like a better organized and more specifically complete dictionary of all the commands that are available in this programming style. The author could say---and be correct---that it's all in this book and all I need to do is read it carefully. That's true. If it were organized a little differently, I could do that much quicker and much more palatably. The author is a gifted programmer, and the information is there. It probably contains information that is not easy to find elsewhere. On the other hand, I don't think the author is a gifted teacher.

Not enough info...

Byjremydeatonon July 17, 2017 - Published on Amazon.com

In a nutshell: Not enough info. Chapters felt rushed and incomplete. Some examples are given with minimal or no explanation. Felt more like a summary of bash programming. I ended up getting more out of the "man" pages than I did from this book. Which is saying a lot, if you understand how some man pages can be. I only got about half way before I ended up moving on to another book.

One person found this helpful.

I'm lost halfway through Chapter 2.

ByMartyon August 4, 2016 - Published on Amazon.com

I've been able to learn Java through textbooks so I figured bash scripting can't be much different. Not enough information is provided to make this book useful. It's overly confusing and difficult to read. If the authors were describing the unfamiliar tools of a specialized mechanic they might tell you "Croapers are Dipplers containing Trabulits. They can be used as a substitute for Horpsules. Exercise: Build an electron microscope."

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