W.Richard Stevens(1951-1999)，国际知名的UNIX和网络专家，受人尊敬的作家。他的著作有《UNIX网络编程》(两卷本)，《UNIX网络高级编程》，《TCP/IP详解》(三卷本)等，同时他还是广受欢迎的教师和顾问。-W. Richard Stevens (1951-1999), internationally renowned UNIX and networking expert, a respected writer. His works include " UNIX Network Programming"　(two volumes), " UNIX Network Advanced Programming" , " TCP/IP Detailed"　(three volumes), etc., while he was a popular teacher and consultant.