18 	close(fd[0]);  in close_pair()
19 	close(fd[1]);  in close_pair()
26 	close(fd);  in dup_devnull()
36 	 * In case of errors we must keep the promise to close FDs  in start_command()
44 				close(cmd->out);  in start_command()
58 				close(cmd->in);  in start_command()
70 				close(cmd->in);  in start_command()
74 				close(cmd->out);  in start_command()
90 			close(cmd->in);  in start_command()
109 			close(cmd->out);  in start_command()
140 			close(cmd->in);  in start_command()
144 			close(cmd->out);  in start_command()
153 		close(fdin[0]);  in start_command()
155 		close(cmd->in);  in start_command()
158 		close(fdout[1]);  in start_command()
160 		close(cmd->out);  in start_command()
163 		close(fderr[1]);  in start_command()