Build Awesome Command-Line Applications in Ruby: Control Your Computer, Simplify Your Life (Paperback)

David B. Copeland

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商品描述

As Ruby pro David Copeland explains, writing a command-line application that is self-documenting, robust, adaptable and forever useful is easier than you might think. Ruby is particularly suited to this task, since it combines high-level abstractions with "close to the metal" system interaction wrapped up in a concise, readable syntax. Moreover, 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 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:

All you'll need is Ruby, and the ability to install a few gems along the way. Examples written for Ruby 1.9.2, but 1.8.7 should work just as well.

商品描述(中文翻譯)

如Ruby專家David Copeland所解釋的,撰寫一個自我記錄、堅固、適應性強且永遠有用的命令行應用程式比你想像的要容易。Ruby特別適合這項任務,因為它結合了高層抽象和簡潔易讀的語法,同時提供了與系統互動的接口。此外,Ruby還擁有豐富的開源工具和庫的支持。

這本書的十個深入章節分別解釋和演示了命令行的最佳實踐。你將看到如何使用這些工具將最基本的自動化腳本提升為易於維護、精緻的應用程式。

你將學習如何使用免費的開源解析器創建用戶友好的命令行界面以及命令套件。你將看到如何使用默認值使選項對於日常用戶保持簡單,同時為高級用戶提供更複雜任務的選項。

命令行應用程式不應該缺乏文件,無論是作為幫助命令還是man頁面的一部分;你將了解何時以及如何使用這兩者。從命令行新手到專家的旅程以寶貴的測試方法結束,並包括一些為用戶帶來驚喜的創新、豐富多彩的界面技巧。

有了Ruby,命令行不會消失。命令行萬歲。

你所需要的只是Ruby,以及在過程中安裝一些gem的能力。示例是針對Ruby 1.9.2編寫的,但1.8.7也同樣適用。