An advanced, very robust BSD 4.4 based operating system for Intel based PCs.
More information is available at the FreeBSD web site .
Upgrading using the source code or How to make the world your own One of FreeBSD's strengths is that individual users have access to the complete source code of the entire operating system. Upgrading from one stable version to the next, or keeping in sync with the latest and greatest code base is relatively trivial. However, rebuilding the operating system from source code is still a complex task, and there are a number of steps to complete and pitfalls to avoid along the way. This document takes you through those steps one by one. A project is under way to convert it from LinuxDoc to DocBook.