Build Awesome Command-Line Applications in Ruby 2

How This Book Is Organized

In the next ten chapters, we’ll discuss every detail of command-line application development, from user input, program output, and code organization to error handling, testing, and distribution. We’ll learn about this by building and enhancing two example applications. Over the course of the book, we’ll make them better and better to learn what an awesome command-line app is. We’ll see that Ruby makes it very easy to do, thanks to its great syntax and features, as well as several open source libraries.

The first thing we’ll learn—in Chapter 1, ​Have a Clear and Concise Purpose​—is what sort of applications are right for the command line. We’ll then learn—in Chapter 2, ​Be Easy to Use​—the nuts and bolts of making ...