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Absolute OpenBSD, 2nd Edition by Michael W. Lucas

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OpenBSD’s Support Model

If you’ve worked with only commercial UNIX, you might find OpenBSD’s support structure a little surprising. There is no toll-free number to call and no vendor to guide you. No, you may not speak to the manager of the support team. There isn’t one. The management is you.

Many commercial operating systems conceal their inner workings, and the only access you get is through the programs, application programming interfaces (APIs), and application binary interfaces (ABIs) they provide. If you want to learn more about how your operating system works, you can’t (unless you reverse-engineer it). When something breaks, you either live with it or pay the vendor to solve the problem.

OpenBSD, on the other hand, is completely open. ...

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