在Linux/Unix平台下，用C语言编写一个进程通信的程序，理解fork()等一些系列系统函数的正确使用和工作原理，学会设计基本的进程通信程序。-in Linux / Unix platform using C language of a process of communication procedures, understanding fork () and some other family functions and the use of the correct principle, learn the basic process design communication program.