The only complete reference for programmers working in the UNIX enviroment. Not just a reference book but a very well guide to learn fundamentals of UNIX programming. Everything you want to know about UNIX programming. Signal handling, file system, I/O and lots of other chapters about advanced programming with UNIX. If you're looking a book to develop "real" advanced apps. or to join the development of Linux kernel and other open system projects, this is the FIRST book you must buy...It's sad to say this but the author of this book; the big guru, Richard Stevens is nomore with us. rest it peace guru...