本书全面介绍了UNIX系统的程序设计界面—系统调用界面和标准C库提供的许多函数。 本书的前15章着重于理论知识的阐述，主要内容包括UNIX文件和目录、进程环境、进程控制、进程间通信以及各种I/O。在此基础上，分别按章介绍了多个应用实例，包括如何创建数据库函数库，Postscr ipt 打印机驱动程序，调制解调器拨号器及在伪终端上运行其他程序的程序等。 本书内容丰富权威，概念清晰精辟，一直以来被誉为UNIX编程的“圣经”，对于所有UNIX程序员—无论是初学者还是专家级人士—都是一本无价的参考书籍。 -the book a comprehensive account of the UNIX system programming interface-system call interface and the standard C library provides a lot of functions. The book's first 15 chapters focus on theoretical knowledge exposition, includes UNIX files and directories, processes, process control, inter-process communication and I/O. On this basis, according to introduce a number of application examples, including how to create database libraries, Postscr ipt printer driver, a modem and a dial-up in pseudo-terminals running on other procedures procedures. The book is rich in content authority, brilliantly clear concept has been praised as UNIX Programming "Bible" for all UNIX programmers- whether beginners or experts- who are an invaluable reference books.