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Full Discussion: where does stdout link to?
Special Forums Hardware Filesystems, Disks and Memory where does stdout link to? Post 37343 by Perderabo on Tuesday 17th of June 2003 09:57:09 AM
Old 06-17-2003
The internal detail vary based on the kernel and the details that you are quoting are alien to me. The fd table points to a system file table entry. The first one is called stdout. With the kernels I know, the file table will then point to a vnode.

/dev/tty and /dev/null are not called ordinary files. They are called special files because they actually connect to a driver.

But stdout is opened just like every other file...well it could be a socket. But the kernel does not treat fd 0 any differently than, say, fd 5.
 

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LINK(3) 								 1								   LINK(3)

link - Create a hard link

SYNOPSIS
bool link (string $target, string $link) DESCRIPTION
link(3) creates a hard link. PARAMETERS
o $target - Target of the link. o $link - The link name. RETURN VALUES
Returns TRUE on success or FALSE on failure. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.3.0 | | | | | | | This function is now available on Windows plat- | | | forms (Vista, Server 2008 or greater). | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 Creating a simple hard link <?php $target = 'source.ext'; // This is the file that already exists $link = 'newfile.ext'; // This the filename that you want to link it to link($target, $link); ?> NOTES
Note This function will not work on remote files as the file to be examined must be accessible via the server's filesystem. Note For Windows only: This function requires PHP to run in an elevated mode or with the UAC disabled. SEE ALSO
symlink(3), readlink(3), linkinfo(3). PHP Documentation Group LINK(3)
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