Robbins and Robbins (both Computer science, U. of Texas, San Antonio) cover design and implementation of reliable UNIX software on Linux, Solaris, Mac OS X, and other POSIX-based systems in this update of Kay Robbins' Practical UNIX Programming (1996) . The text introduces the essentials of UNIX programming with short code snippets and practical examples and exercises using the latest UNIX standards. Topics include communication, concurrency, multithreading, files, signals, semaphores, and POSIX threads. This edition features new chapters on the Web, UDP, and server performance. Annotation (c) Book News, Inc., Portland, OR (booknews.com)