NAME

       peekfd - peek at file descriptors of running processes

SYNOPSIS

       peekfd  [-8,--eight-bit-clean]  [-n,--no-headers]  [-c,--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 <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)