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CentOS 7.0 - man page for peekfd (centos section 1)

PEEKFD(1)					    User Commands					    PEEKFD(1)

NAME
peekfd - peek at file descriptors of running processes
SYNOPSIS
peekfd [-8,--eight-bit-clean] [-n,--no-headers] [-f,--follow] [-d,--duplicates-removed] [-V,--version] [-h,--help] pid [fd] [fd] ...
DESCRIPTION
peekfd attaches to a running process and intercepts all reads and writes to file descriptors. You can specify the desired file descriptor numbers or dump all of them.
OPTIONS
-8 Do no post-processing on the bytes being read or written. -n Do not display headers indicating the source of the bytes dumped. -c Also dump the requested file descriptor activity in any new child processes that are created. -d Remove duplicate read/writes from the output. If you're looking at a tty with echo, you might want this. -V Display a version string. -h Display a help message.
FILES
/proc/*/fd Not used but useful for the user to look at to get good file descriptor numbers.
ENVIRONMENT
None.
DIAGNOSTICS
The following diagnostics may be issued on stderr: Error attaching to pid ... An unknown error occurred while attempted to attach to a process.. you may need to be root.
BUGS
Probably lots. Don't be surprised if the process you are monitoring dies.
AUTHOR
Trent Waddington <trent.waddington@gmail.com>
SEE ALSO
ttysnoop(8) psmisc 2012-07-28 PEEKFD(1)


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