This edition of Advanced Programming in the UNIX Environment supports today’s leading platforms reflects new technical advances and best practices and aligns with Version 4 of the Single UNIX Specification. This valuable tool begins with files directories and processes carefully laying the groundwork for more advanced techniques such as signal handling and terminal I/O then thoroughly covers threads and multithreaded programming and socket-based IPC. This edition covers more than seventy new interfaces including POSIX asynchronous I/O spin locks barriers and POSIX semaphores.