23         close(exitPipefd[0]);  in asyncSystem()
27             close(resultPipefd[0]);  in asyncSystem()
30             close(resultPipefd[1]);  in asyncSystem()
36         close(exitPipefd[1]);  in asyncSystem()
41         close(exitPipefd[1]);  in asyncSystem()
45             close(resultPipefd[1]);  in asyncSystem()
54             close(exitPipefd[0]);  in asyncSystem()
70             close(resultPipefd[0]);  in asyncSystem()
75         close(exitPipefd[0]);  in asyncSystem()
105         close(exitPipefd[0]);  in asyncSystem()
106         close(exitPipefd[1]);  in asyncSystem()
109             close(resultPipefd[0]);  in asyncSystem()
110             close(resultPipefd[1]);  in asyncSystem()