Re: [gentoo-user] how to find if a program is using a particular /dev device?

[michael@michaelshiloh.com]

Excellent. That's very helpful as well.

Michael


On Sat, 19 Nov 2005, Nick Rout wrote:

> On Fri, 18 Nov 2005 00:48:19 -0800 (PST)
> michael@michaelshiloh.com wrote:
>
>> That was it. Thanks!
>> M
>
> you could also try
>
> strace -eopen programname
>
> It will give a pretty verbose account of what files are opened by
> programname. (and of course devices, like everything else, are files)
>
>>
>>
>> On Fri, 18 Nov 2005, John Myers wrote:
>>
>>> On Thursday 17 November 2005 23:54, michael@michaelshiloh.com wrote:
>>>> I have a custom device driver in /dev/ that can only be used by one
>>>> program at a time. Since the device is /dev/ttyUSB0, I can see if anyone
>>>> is using it by:
>>>>
>>>>  	ls -l /proc/*/fd/* | grep ttyUSB0
>>>>
>>>> Is there a utility or other better way I can discover which process, or
>>>> better, which program, is using a particular device?
>>>>
>>>> Thanks,
>>>> Michael
>>> try lsof
>>>
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