Ubuntu - How to determine which process has /dev/ttyUSB0 port open?

EricNZ · 01-16-2011, 04:57 PM

I'm developing a serial port application under Lazarus using the SunaSer code library.

The application reports an error indicating that "the Port is opened by another process".

What command can I execute in a Terminal session to determine what process has the USB-serial port open?

Eric

AlucardZero · 01-16-2011, 05:15 PM

does

Code:

lsof | grep USB0

work?

savotije · 01-16-2011, 05:19 PM

Or just:

Code:

lsof  /dev/ttyUSB0

EricNZ · 01-16-2011, 05:39 PM

Neither command produces any output in Terminal (in fact I had previously submitted the lsof command but couldn't see any mention of the port in question).

I guess I'll just have to review the source of the library code to clarify what exactly triggers the exception ...

Thanks for the responses.

savotije · 01-16-2011, 05:51 PM

That means that No process has opened file /dev/ttyUSB0.