The Serial Programming Guide for POSIX Operating Systems will teach you how to successfully, efficiently, and portably program the serial ports on your UNIX?workstation or PC. Each chapter provides programming examples that use the POSIX (Portable Standard for UNIX) terminal control functions and should work with very few modifications under IRIX? HP-UX, SunOS? Solaris? Digital UNIX? Linux? and most other UNIX operating systems. The biggest difference between operating systems that you will find is the filenames used for serial port device and lock files. port device and lock files.