Richard Bejtlich, Tao Security: Krafft is obviously a Debian enthusiast, but he is not a zealot blind to any flaws Debian might possess. He is also not afraid to praise other OS' (like NetBSD) or declare that certain misconceptions (think debconf) are invalid. When necessary he compares Debian tools or syntax to other Linux distributions, such as a chart on pp 200-201 on apt, yum, up2date, and urpmi. The book also contains a large number of footnotes with URLs for more research and additional commentary.