We analysed socket process communication mechanism in Unix environment,and its socket system transfer,and at last introduced how to implement communication between Client and Server,and Client and serial Servers on the network system.

• 分析了Unix环境下socket进程通信机制，以及socket系统调用。 最后介绍了如何在网络系统下实现Client与Server的通信和Client与多个Server的通信。