分别利用UNIX的消息通信机制、共享内存机制（用信号灯实施进程间的同步和互斥）实现两个进程间的数据通信。具体的通信数据可从一个文件读出，接收方进程可将收到的数据写入一个新文件，以便能判断数据传送的正确性（对文件操不熟悉的同学可不必通过读写文件，只要键盘输入和输出至屏幕进行比较即可）。

-, Respectively, using the information communication mechanism UNIX, shared memory mechanism (with traffic lights between the implementation of the process of synchronization and mutual exclusion) between the two processes to achieve data communications. Specific communication data can be read from a file, the recipient can process the data received to write a new document in order to determine the accuracy of data (for file-speaking students are not familiar with reading and writing files may not have to go through, as long as keyboard input and output can be compared to the screen).