Michael Jang, LCP, MCSE, RHCE is the author of the two previous bestselling editions of RHCE Red Hat Certified Engineer Linux Study Guide as well as author of the new sixth edition, RHCSA/RHCE Red Hat Linux Certification Study Guide, which published in June 2011. He is also the author of CompTIA Linux+ Exam Cram and Sair Linux/GNU Installation and Configuration Exam Cram (Wiley).