peekfd1
Peek at file descriptors of running processes
Usage
peekfd [-8,--eight-bit-clean]
[-n,--no-headers]
[-c,--follow]
[-d,--duplicates-removed]
[-V,--version]
[-h,--help]
pid
[fd]
[fd] ...
Overview
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.
Releases
10 releases since Debian 5.0 (Lenny); the text changed 3 times.