Book Description

Writing a command-line application that’s self-documenting, robust, adaptable and forever useful is easier than you might think. Ruby is particularly suited to this task, because it combines high-level abstractions with “close to the metal” system interaction wrapped up in a concise, readable syntax. Plus, Ruby has the support of a rich ecosystem of open source tools and libraries.

Ten insightful chapters each explain and demonstrate a command-line best practice. You’ll see how to use these tools to elevate the lowliest automation script to a maintainable, polished application. You’ll learn how to use free, open source parsers to create user-friendly command-line interfaces as well as command suites. You’ll see how to use defaults to keep options simple for everyday users, while giving advanced users options for more complex tasks. There’s no reason why a command-line application should lack documentation, whether it’s part of a help command or a man page; you’ll find out when and how to use both. Your journey from command-line novice to pro ends with a look at valuable approaches to testing your apps, and includes some fun techniques for outside-the-box, colorful interfaces that will delight your users.

With Ruby, the command line is not dead. Long live the command line.

What You Need
An installation of Ruby 2, along with a few open-source Rubygems.

Table of Contents
Chapter 1. Have a Clear and Concise Purpose
Chapter 2. Be Easy to Use
Chapter 3. Be Helpful
Chapter 4. Play Well with Others
Chapter 5. Delight Casual Users
Chapter 6. Make Configuration Easy
Chapter 7. Distribute Painlessly
Chapter 8. Test, Test, Test
Chapter 9. Be Easy to Maintain
Chapter 10. Add Color, Formatting, and Interactivity

Appendix A1. Common Command-Line Gems and Libraries
Appendix A2. Bibliography

Book Details

• Paperback: 224 pages
• Publisher: Pragmatic Bookshelf (November 2013)
• Language: English
• ISBN-10: 1937785750
• ISBN-13: 978-1937785758

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