I've been looking for the opportunity to rave about this book. It is by far the best UNIX/Linux book I've ever read. The part that got my attention is that while it covers several different programming topics, it isn't afraid to get down to the details. From the program management tools to the low-level system calls, every line is explained. The text is full of examples to illustrate the concepts presented which include sockets, database structures, and inter-process communication. Not exactly introductory topics, but the writers have made them as straightforward as your first "Hello World" program. From shell scripting to CGI, it's all here; and in the same visually appealing style that distinguish other books by Wrox Press. I anxiously await a follow-up to Beginning Linux Programming.