How to get the output of a process from PID

[Dash_2]

Hi,

I have started a process by redirecting its output to /dev/null. Is there any way to get the output into a file without stopping the process ? From the PID can I get the output ?

Any help ?
Thanks in advance.
Regards
Dash

[James R. Ferguson]

Hi Dash:

No.

Regards!

...JRF...

[Pete Randall]

I'm afraid you'll have to kill it and restart it.


Pete

[Dash_2]

Thanks James and Pete.

SO that is the ONLY solution.

[OldSchool]

"SO that is the ONLY solution. "


Are you asking or making an observation? If your asking, that IS the ONLY solution.

You might consider awarding points to James and Pete, as the answer is correct, even if undesired

[whiteknight]

Dash

the output is going to /dev/null, so it is gone!

WK
please assign points

[Bill Hassell]

Unless your process has been written to respond external changes (config files, signals), your process has already opened the file (/dev/null) and just keeps writing to the currently open file descriptor in the program. To change this file means that the program must close and release the file, then open a new file and continue writing. In other words, not possible.

[Dennis Handly]

How much is it worth to you?
You do know that the data written is gone, but you may be able to "redirect" future output.

>Bill: To change this file means that the program must close and release the file, then open a new file and continue writing. In other words, not possible.

That's not quite true. If you can attach gdb to the process you could do a command line call to fopen a file and then dup2 the FD to stdout.

Of course I'm waving my hands here but that process was what we did for cfront.