On Wed, Nov 27, 2019 at 07:03:13AM -0500, Gene Heskett wrote:
> On Wednesday 27 November 2019 01:55:50 Reco wrote:
>
> > Hi.
> >
> > On Tue, Nov 26, 2019 at 05:05:13PM -0500, Gene Heskett wrote:
> > > Greetings all;
> > >
> > > I have what I believe to be noise or crosstalk causing interference
> > > between a wireless keyboard mouse and the machine they are
> > > controlling, which is an rpi4. The app itself doesn't expose any
> > > usb traffic to the user. The effect is as if the finger was lifted
> > > from the key for a hundred ms or so at random intervals.
> > >
> > > So what, on an armhf raspi, do we have for a usbsnoop?
> >
> > /usr/sbin/tcpdump -D
> >
> > </thread>
>
> Thanks Reco, I had to install it, but then reread the man page a couple
> times, but I don't get it yet: (screen snip)
tcpdump(8) says:
-i interface
--interface=interface
Listen on interface ...
If the -D flag is supported, an interface number as printed by
that flag can be used as the interface argument, if no interface on the
system has that number as a name.
So,
sudo /usr/sbin/tcpdump -i 8
Reco
