A guide to developing an application package under UNIX System V, this book describes how to use the UNIX system services provided by the kernel, such as file and record locking, the process scheduler, and symbolic links. It also covers the use of library routines in software development in general and the use of standard tools to package application software for easy installation on a running system. Other topics include interprocess communication, memory management, packaging application software, modifying the system interface, and data validation tools.