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The Multi-Boot Configuration Handbook by Roderick Smith

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Commercial Versions of UNIX

The hype in the UNIX world these days goes to Linux, and to a lesser extent the free BSD variants, particularly FreeBSD. The UNIX world is much larger than these OSs, though. In fact, technically speaking, neither Linux nor the free BSD variants is a version of UNIX because UNIX is a trademarked term that can be applied only to products that have passed a suite of tests. These tests are expensive, and most Linux and BSD users aren't particularly concerned with the label, so neither class of system has been tested.

Several commercial UNIX vendors exist, however, most of whom have acquired the right to call their products UNIX. You might want to install one of these OSs for any of a number of reasons, though most ...

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