Description: 1, the understanding of the system call pipe () function and the principle of two actual preparation of a procedure, Pipeline father used to achieve the process of communication between a) the use of system calls fork () to create a child process b) Import Cheng called function write () to send their parent process ID of the process, and the string "'s sending a m essage to parent. \ n. " C) the process of the function call father read () through the pipeline read to the child process the news, the news output screen, then terminated
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