给出一个应用双向管道进行不同进程间进行通信的实例。-An application is given a two-way pipeline for communication between different process instances.

linux的多进程通信，使用管道实现了多个父子进程间的消息传递及其内存共享-linux for multi-process communication, the use of pipes to achieve a number of inter-process messaging father and son and memory sharing