In This Chapter
Discovering the benefits of Unix
Doing things with the keyboard
Introducing Unix commands
Creating text files
Exploring deep inside OS X Yosemite
As I mention in the first chapter of the book — at the beginning of our Yosemite odyssey — Unix lurks deep beneath the shiny Aqua exterior of OS X. Unix is a tried-and-true operating system (OS) that’s been around for decades, since the days when minicomputers were king. If you don’t believe that it’s a powerful (and popular) OS, consider that more than half of all web servers on the Internet run using some variety of Unix.
Besides being battle-tested and having a long history, Unix offers some fantastic features. Unlike in the graphical world of OS X, however, the keyboard plays an integral role in using Unix. Because Unix is text-based, it’s evolved a large set of useful keyboard-driven commands that can perform powerful feats that a mouse user just can’t easily equal, such as moving ...