(d.) Explain, using examples how the following sample code, which utilises the linux fork(). wait() and...

 

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(d.) Explain, using examples how the following sample code, which utilises the linux fork(). wait() and exec() command, can be used to run new processes. (12 marks). Void execute (char* argv[]) { . /* variable declaration */ pid_t pid; int status; if ((pid = fork()) < 0) { here */ } else if (pid == 0) { printf("*** ERROR: forking child process failed "); exit(42); } if (execvp(*argv, argv) < 0) { printf("*** ERROR: exec failed "); exit(1): } } else { here */ /* What is happening while (wait(&status) != pid); /* what is happening here /* what is happening here */ /* what is happening (d.) Explain, using examples how the following sample code, which utilises the linux fork(). wait() and exec() command, can be used to run new processes. (12 marks). Void execute (char* argv[]) { . /* variable declaration */ pid_t pid; int status; if ((pid = fork()) < 0) { here */ } else if (pid == 0) { printf("*** ERROR: forking child process failed "); exit(42); } if (execvp(*argv, argv) < 0) { printf("*** ERROR: exec failed "); exit(1): } } else { here */ /* What is happening while (wait(&status) != pid); /* what is happening here /* what is happening here */ /* what is happening