Home
Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages

BSD 2.11 - man page for fd (bsd section 4)

FD(4)					       Kernel Interfaces Manual 					FD(4)

NAME
fd, stdin, stdout, stderr file descriptor files
DESCRIPTION
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 calls: 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.
FILES
/dev/fd/# /dev/stdin /dev/stdout /dev/stderr
SEE ALSO
tty(4) 4th Berkeley Distribution February 4, 1997 FD(4)


All times are GMT -4. The time now is 09:29 AM.

Unix & Linux Forums Content Copyright 1993-2018. All Rights Reserved.
UNIX.COM Login
Username:
Password:  
Show Password