Von Hagen, William

William von Hagen holds degrees in computer science, English writing, and art history. William has worked with UNIX systems since 1982, during which time he has been a system administrator, systems programmer, software developer, development manager, computing facilities operations manager, writer, documentation manager, and (now) content manager. William has written a number of books, including "Linux Filesystems", "Installing Red Hat Linux 7", and "SGML For Dummies", and he contributed to writing "Red Hat 7 Unleashed". Most recently, Hagen coauthored "Mac OS X Power User's Guide" with Brian