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proc.5: Tweaks to Mike Frysinger's patch
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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man5/proc.5
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man5/proc.5
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@ -59,7 +59,7 @@
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.\" to see what information could be imported from that file
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.\" to see what information could be imported from that file
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.\" into this file.
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.\" into this file.
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.\"
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.\"
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.TH PROC 5 2013-04-17 "Linux" "Linux Programmer's Manual"
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.TH PROC 5 2013-06-27 "Linux" "Linux Programmer's Manual"
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.SH NAME
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.SH NAME
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proc \- process information pseudo-file system
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proc \- process information pseudo-file system
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.SH DESCRIPTION
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.SH DESCRIPTION
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@ -226,15 +226,20 @@ process has open, named by its file descriptor, and which is a
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symbolic link to the actual file.
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symbolic link to the actual file.
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Thus, 0 is standard input, 1 standard output, 2 standard error, etc.
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Thus, 0 is standard input, 1 standard output, 2 standard error, etc.
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For fds open to non-files, they will be symlinks to the type with the inode.
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For file descriptors for pipes and sockets,
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the entries will be symbolic links whose content is the
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file type with the inode.
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A
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A
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.BR readlink (2)
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.BR readlink (2)
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call on this file returns a string in the format:
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call on this file returns a string in the format:
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.br
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type:[inode]
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type:[inode]
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.br
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For example, socket:[2248868] will be a socket and its inode is 2248868.
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For example,
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For sockets, that inode can be used to find more info in one of the files under
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.I socket:[2248868]
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will be a socket and its inode is 2248868.
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For sockets, that inode can be used to find more information
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in one of the files under
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.IR /proc/net/ .
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.IR /proc/net/ .
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.\"The following was still true as at kernel 2.6.13
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.\"The following was still true as at kernel 2.6.13
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