Unix/Linux Go Back    

OpenDarwin 7.2.1 - man page for stdin (opendarwin section 4)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)

FD(4)				   BSD Kernel Interfaces Manual 			    FD(4)

     fd, stdin, stdout, stderr -- file descriptor files

     The files /dev/fd/0 through /dev/fd/# refer to file descriptors which can be accessed
     through the file system.  If the file descriptor is open and the mode the file is being
     opened with is a subset of the mode of the existing descriptor, the call:

	   fd = open("/dev/fd/0", mode);

     and the call:

	   fd = fcntl(0, F_DUPFD, 0);

     are equivalent.

     Opening the files /dev/stdin, /dev/stdout and /dev/stderr is equivalent to the following

	   fd = fcntl(STDIN_FILENO,  F_DUPFD, 0);
	   fd = fcntl(STDOUT_FILENO, F_DUPFD, 0);
	   fd = fcntl(STDERR_FILENO, F_DUPFD, 0);

     Flags to the open(2) call other than O_RDONLY, O_WRONLY and O_RDWR are ignored.



BSD					   June 9, 1993 				      BSD
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums

All times are GMT -4. The time now is 03:37 PM.