Introduction - If you have any usage issues, please Google them yourself
Write an application under linux, named an_ch2 1b. The program continuously outputs the following lines:
Those output come from child, [system time]
Write another application named an_ch2_1a. This program creates a subprocess to execute an_ch2_1b. The program continuously outputs the following lines:
Those output come from child, [system time]
Observe the results of the program and explain the phenomena you see.