Peter Seebach

Mark G. Sobell is president of Sobell Associates Inc., a consulting firm that specializes in UNIX/Linux training, support, and custom software development. He is the author of many best-selling UNIX and Linux books and has more than twenty-five years of experience working with UNIX and Linux.

Peter Seebach, a freelance writer specializing in UNIX development, has published dozens of technical articles for IBM developerWorks.

Mark G. Sobell

Mark G. Sobell is the author of three best-selling UNIX and Linux books: A Practical Guide to the UNIX System, UNIX System V: A Practical Guide, and A Practical Guide to Linux. He has more than twenty years of experience working with UNIX and Linux and is president of Sobell Associates Inc., a consulting firm that designs and builds custom software applications, designs and writes documentation, and provides UNIX and Linux training and support.