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Part: IV Introduction to BSD Applications > Introducing the BSD Subsystem

Chapter 12. Introducing the BSD Subsystem

In This Chapter

In this chapter, we finally reach the point for which some readers have been waiting years, and some have been dreading since they heard about the underpinnings of OS X. We now start conversing directly with the BSD-4.4-derived Unix implementation that underlies Mac OS X. BSD (Berkeley Software Distribution) is one of the two major philosophical variants of Unix. If you're a longtime Unix user, you'll probably find much of the rest of this book familiar, and you should consider it a reference to those places where the Apple implementation differs from what you're already familiar with. If, on the other hand, you're new to Unix, you'll soon have to decide whether you're satisfied with Mac OS X as simply a more stable, more powerful flavor of the Mac OS you've grown to know and love, or whether you want to learn even more. In this chapter, we'll cover the primary concepts that you'll need to understand to make use of the BSD subsystem, and introduce some of the most important command-line programs.


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