Mac OS X System Folder

The Mac OS X system software is fundamentally different from earlier versions of the Mac OS, and that difference goes from its plumbing to its user interface. That's because it's actually a melding of three operating systems: OpenStep (a product of Steve Jobs's previous company, Next), BSD Unix (a powerful flavor of Unix), and Mac OS. This hybrid makes Mac OS X a powerful beast, but it also introduces a few quirks and some evil magic necessary to make the whole mélange work together properly.

Unlike Mac OS 9, Mac OS X doesn't put all the system components in a single blue folder. Instead, it has many invisible files and ...

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