O’Reilly’s Mac OS X Tiger for Unix Geeks, by Brian Jepson and Ernest E. Rothman (the latest edition of the book), has been revised and expanded to cover “further changes to what is now, ironically, the world’s most widely-used Unix system.” O’Reilly says that this book is a “survival guide for developers and system administrators who want to tame the Unix side of Mac OS X.” The revised book covers five areas: Getting Around, Building Applications, Working with Packages, Serving and System Management, and Appendixes. Mac OS X Tiger for Unix Geeks is available now for US$34.95.