Man page - peekfd(1)

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Manual

PEEKFD

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
FILES
ENVIRONMENT
DIAGNOSTICS
BUGS
AUTHOR
SEE ALSO

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