peekfd(1)

1PEEKFD(1)                        User Commands                       PEEKFD(1)
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NAME

6       peekfd - peek at file descriptors of running processes
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SYNOPSIS

9       peekfd [-8,--eight-bit-clean] [-n,--no-headers] [-c,--follow] [-d,--du‐
10       plicates-removed] [-V,--version] [-h,--help] pid [fd] [fd] ...
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DESCRIPTION

13       peekfd attaches to a running  process  and  intercepts  all  reads  and
14       writes  to file descriptors.  You can specify the desired file descrip‐
15       tor numbers or dump all of them.
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OPTIONS

18       -8     Do no post-processing on the bytes being read or written.
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20       -n     Do not display  headers  indicating  the  source  of  the  bytes
21              dumped.
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23       -c     Also  dump  the  requested  file  descriptor activity in any new
24              child processes that are created.
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26       -d     Remove duplicate read/writes from the output.  If you're looking
27              at a tty with echo, you might want this.
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29       -v     Display a version string.
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31       -h     Display a help message.
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FILES

34       /proc/*/fd
35              Not used but useful for the user to look at to get good file de‐
36              scriptor numbers.
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ENVIRONMENT

39       None.
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DIAGNOSTICS

42       The following diagnostics may be issued on stderr:
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44       Error attaching to pid <PID>
45              An unknown  error  occurred  while  attempted  to  attach  to  a
46              process, you may need to be root.
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BUGS

49       Probably  lots.   Don't  be surprised if the process you are monitoring
50       dies.
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AUTHOR

53       Trent Waddington ⟨trent.waddington@gmail.com⟩
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