peekfd(1) - man - phpMan

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 <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 AT gmail.com⟩

SEE ALSO
       ttysnoop(8)



psmisc                                       2020-09-09                                    PEEKFD(1)