By David B. Copeland
Speak on to your method. With its easy instructions, flags, and parameters, a well-formed command-line program is the fastest approach to automate a backup, a construct, or a deployment and simplify your life.
As Ruby professional David Copeland explains, writing a command-line software that's self-documenting, powerful, adaptable and eternally precious is simpler than chances are you'll imagine. Ruby is especially fitted to this job, because it combines high-level abstractions with "close to the steel" process interplay wrapped up in a concise, readable syntax. in addition, Ruby has the aid of a wealthy environment of open-source instruments and libraries.
Ten insightful chapters every one clarify and display a command-line most sensible perform. you will see find out how to use those instruments to raise the lowliest automation script to a maintainable, polished software.
You'll methods to use loose, open resource parsers to create trouble-free command-line interfaces in addition to command suites. you will see the best way to use defaults to maintain innovations easy for daily clients, whereas giving complex clients techniques for extra complicated initiatives.
There's no cause a command-line program should still lack documentation, no matter if it is a part of a aid command or a guy web page; you will find out whilst and the way to exploit either. Your trip from command-line amateur to seasoned ends with a glance at necessary methods to trying out your apps, and contains a few enjoyable thoughts for outside-the-box, colourful interfaces that might satisfaction your users.
With Ruby, the command line isn't really useless. lengthy reside the command line.
What You Need:
All you will need is Ruby, and the power to put in a couple of gemstones alongside the way in which. Examples written for Ruby 1.9.2, yet 1.8.7 may still paintings simply as well.
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