O’Reilly has announced the release of the “Unix CD Bookshelf, Version 3.0” (US$129.95), which provides convenient online access to seven of its popular books: “Unix Power Tools, 3rd Edition,” “Learning the Unix Operating System, 5th Edition,” “Learning the vi Editor, 6th Edition,” “Mac OS X for Unix Geeks,” “Learning the Korn Shell, 2nd Edition,” “sed & awk, 2nd Edition,” and “Unix in a Nutshell, 3rd Edition.” The CD has a master index for all seven books and a powerful search engine — with all the text extensively hyper-linked — so users can find what they’re looking for quickly.