How do I grant full privileges to a user to do whatever they want to do to USB devices? For example, I have software ( https://github.com/bcrowell/freelab ) that needs to claim a USB interface, and I get this error:
Can I do this by editing /etc/group? By doing something with udev? This post http://ubuntuforums.org/showthread.php?t=1851620 describes a failed attempt to do it with udev; I don't know anything about udev, and just based that attempt on what I found by googling.
/usr/lib/ruby/1.8/usb.rb:401:in `usb_claim_interface': Operation not permitted - usb_claim_interface (Errno::EPERM) from /usr/lib/ruby/1.8/usb.rb:401:in `claim_interface' from ./vernier.rb:246:in `initialize' from -e:1:in `new' from -e:1
This is on lucid.
Thanks in advance!