If you want to use your dragon without having to use sudo to run avrdude, create a file under ’etc/udev/rules.d’. Call it for example 99-avrdragon.rules
You only need a single line in the file:
SUBSYSTEM==”usb”, ENV{DEVTYPE}==”usb_device”, ATTR{idVendor}==”03eb”, ATTR{idProduct}==”2107″, MODE=”0666″
After that plug in you dragon and try it out!
You could probably be more creative and assign it to some group(perhaps dragonusers…), but this works for me in ubuntu 14.04