peekfd (1) - Linux Man Pages
peekfd: peek at file descriptors of running processes
peekfd - peek at file descriptors of running processes
SYNOPSISpeekfd [-8,--eight-bit-clean] [-n,--no-headers] [-f,--follow] [-d,--duplicates-removed] [-V,--version] [-h,--help] pid [fd] [fd] ...
DESCRIPTIONpeekfd 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.
- Do no post-processing on the bytes being read or written.
- Do not display headers indicating the source of the bytes dumped.
- Also dump the requested file descriptor activity in any new child processes that are created.
- Remove duplicate read/writes from the output. If you're looking at a tty with echo, you might want this.
- Display a version string.
- Display a help message.
- Not used but useful for the user to look at to get good file descriptor numbers.
DIAGNOSTICSThe following diagnostics may be issued on stderr:
- Error attaching to pid ...
- An unknown error occurred while attempted to attach to a process.. you may need to be root.
BUGSProbably lots. Don't be surprised if the process you are monitoring dies.