Practical, in-depth knowledge of the system programming interfaces that drive the UNIX and Linux kernels Building on W. Rich Stevens' pioneering work, this third edition of the classic was updated by Steve Rago, a colleague of Stevens, to reflect technical advances and best practices aligning with Version 4 of the Single UNIX Specification. This edition covers more than seventy interfaces including: POSIX asynchronous I/O Spin locks Barriers POSIX semaphores Steve carefully retains the spirit and approach that have made this book so valuable, starting with files, directories, and processes, carefully laying the groundwork for more advanced techniques, such as signal handling and terminal I/O. And he thoroughly covers threads and multithreaded programming, and socket-based IPC. Filled with examples, case-studies, and access to thousands of lines of downloadable code, Advanced Programming in the UNIX (R) Environment has helped generations of programmers write code with exceptional power, performance, and reliability.