Introduction - If you have any usage issues, please Google them yourself
Experimental Content] [write a program, while the parent process creates two child processes p1 and p2 make child process p1 and p2 child process to send messages to each other through a message queue (512 bytes). 【Purpose】 systematic understanding linux system communications agency IPC, the IPC messaging mechanism to grasp and understand the message communication methods and characteristics. [Experimental requirements] (1) master system call msgget (), msgsnd (), msgrev (), msgctl () function to use and understand the message communication principles (2) Three linux system understandable communication mechanism.