Unter Ubuntu sollte man für den AVR-ISP-MK2 oder ähnliche USB-Programmer folgendes File anlegen:

/etc/udev/rules.d/80-usbprog.rules:

ATTR{idVendor}=="03eb", ATTR{idProduct}=="2104", GROUP="plugdev", MODE="0660" # AVRISP mkII
ATTR{idVendor}=="03eb", ATTR{idProduct}=="2107", GROUP="plugdev", MODE="0660" # AVR-Dragon
ATTR{idVendor}=="03eb", ATTR{idProduct}=="2103", GROUP="plugdev", MODE="0660" # JTAG ICE mkII
ATTR{idVendor}=="03eb", ATTR{idProduct}=="2106", GROUP="plugdev", MODE="0660" # STK600
ATTR{idVendor}=="16c0", ATTR{idProduct}=="05dc", GROUP="plugdev", MODE="0660" # USBASP von www.fischl.de
ATTR{idVendor}=="03eb", ATTR{idProduct}=="2ffa", GROUP="plugdev", MODE="0660" # AT90USB
ATTR{idVendor}=="10c4", ATTR{idProduct}=="ea60", GROUP="plugdev", MODE="0660" # AVR910
ATTR{idVendor}=="03eb", ATTR{idProduct}=="2105", GROUP="plugdev", MODE="0660" # AVR ONE
ATTR{idVendor}=="03eb", ATTR{idProduct}=="210d", GROUP="plugdev", MODE="0660" # Atmel XPLAIN CDC Gateway 
ATTR{idVendor}=="03eb", ATTR{idProduct}=="2ffb", GROUP="plugdev", MODE="0660" #  AT90USB AVR DFU bootloader
ATTR{idVendor}=="1781", ATTR{idProduct}=="0c9f", GROUP="plugdev", MODE="0660" # adafruit usbtiny

.avrduderc:

default_programmer = "avrisp2"; 
default_serial = "usb";