BSD
Operating systems built on the Berkeley Software Distribution software releases (from the University of California Berkeley) have been around since the mid-1970s. Originally used on expensive hardware, the software has proved flexible and robust enough to port to smaller and smaller systems. Universities and research organizations around the world were already using the software when the first Intel 386 port appeared in March, 1992.
Today, thousands of companies use BSD based systems and software. These systems have proven remarkably stable at some of the busiest sites on the Internet, including Yahoo, New York Internet, Pair Networks, and others. Use of this freely available software has skyrocketed since its beginning and has continued to grow steadily.
Companies large and small want to protect their investment in BSD systems by employing system administrators, programmers, network specialists, and others with demonstrated proficiency in using and understanding these systems.
Attending BSD Conferences expands your knowledge and gives you an edge.