"As an author, editor, and publisher, I never paid much attention to the competition--except in a few cases. This is one of those cases. The UNIX System Administration Handbook is one of the few books we ever measured ourselves against." --From the Foreword by Tim O'Reilly, founder of O'Reilly Media "This book is fun and functional as a desktop reference. If you use UNIX and Linux systems, you need this book in your short-reach library. It covers a bit of the systems' history but doesn't bloviate. It's just straightfoward information delivered in colorful and memorable fashion." --Jason A. Nunnelley "This is a comprehensive guide to the care and feeding of UNIX and Linux systems. The authors present the facts along with seasoned advice and real-world examples. Their perspective on the variations among systems is valuable for anyone who runs a heterogeneous computing facility." --Pat Parseghian The twentieth anniversary edition of the world's best-selling UNIX system administration book has been made even better by adding coverage of the leading Linux distributions: Ubuntu, openSUSE, and RHEL. This book approaches system administration in a practical way and is an invaluable reference for both new administrators and experienced professionals. It details best practices for every facet of system administration, including storage management, network design and administration, email, web hosting, scripting, software configuration management, performance analysis, Windows interoperability, virtualization, DNS, security, management of IT service organizations, and much more. UNIX(R) and Linux(R) System Administration Handbook, Fourth Edition, reflects the current versions of these operating systems: Ubuntu(R) Linux openSUSE(R) Linux Red Hat(R) Enterprise Linux(R) Oracle America(R) Solaris(t) (formerly Sun Solaris) HP HP-UX(R) IBM AIX(R)

Evi Nemeth已经从科罗拉多大学（University of Colorado）计算机科学系教师的岗位上退休了，但是她仍然在参与CAIDA的网络研究工作，CAIDA是圣地亚哥超级计算中心（San Diego Supercomputer Center）的Internet数据分析协作组织（Cooperative Association for Internet Data Analysis）

Garth Snyder曾经在NeXT和Sun公司工作过，他从斯沃索莫学院（Swarthmore College）获得了电机工程专业的学位，并且在罗彻斯特大学（University of Rochester）取得MD和MBA学位。

Trent R. Hein（trent@atrust.com）是Applied Trust Engineering公司的创办人之一，这是一家提供网络基础设施的安全和性能咨询服务的公司。Trent从科罗拉多大学（University of Colorado）获得了计算机科学专业学士学位。