[lug] Finding devices in /dev, gphoto2 permissions

[Scott Herod]

Be aware that the index after the /dev/sda is based on the partition on 
the USB device.  Also, if you keep plugging USB devices in, I am pretty 
sure that they will march down the list of scsi devices, sda, sdb, sdc, 
and so on.  To reset that, "rmmod usb-storage" after umounting the device.

Scott

On Wed, 23 Mar 2005, Hugh Brown wrote:

> I'd search through /var/log/messages for usb plug in events.  It will
> usually tell you which /dev it matched on.  Typically, I think it ends up
> looking like a storage device and will take the first /dev/sd? available
> (/dev/sda if you don't have any scsi devices).
> 
> HTH,
> 
> Hugh
> 
> On Wed, 23 Mar 2005, Stephen Queen wrote:
> 
> > Is there a simple way to determine which special file in
> > /dev a device is associated with. For example, I know from
> > using lsusb the device and bus number
> >
> > bus:device
> >
> > or from lspci
> >
> > bus:slot:func
> >
> > how can I determine the special file that I would then use
> > to mount the device?
> >
> > Another somewhat unrelated question, after a discussion a
> > few weeks ago regarding webcams in which it was suggested
> > that I just use a digital camera and gphoto2 to capture
> > images, I bought a Canon A85.
> >
> > I can only get photos from it if I log in as root. I use
> > both Debian and Slackware. Under Debian I was able to figure
> > out that the group the camera belonged to was plugdev and
> > then added myself to this group. Under slackware, I'm
> > totally clueless. Also, from running
> >
> > gpoto2 --camera "Canon PowerShot A85 (normal mode)"
> > --abilities
> >
> > I believe I should be able to capture images. But it appears
> > that I don't have write permissions. Because I don't know
> > what special file it uses in /dev, I can't check it. I did a
> > quick google and I didn't see anyone else having this
> > problem. Can anyone shed some light on this?
> >
> > Stephen Queen
> >
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