Mark G. Sobell

Mark G. Sobell is President of Sobell Associates Inc., a consulting firm that specializes in UNIX/Linux training, support, and custom software development. He has more than thirty years of experience working with UNIX and Linux systems and is the author of many best-selling books, including A Practical Guide to Fedora™ and Red Hat® Enterprise Linux®, Sixth Edition, and A Practical Guide to Ubuntu Linux®, Third Edition, both from Prentice Hall.