Realraum tuer instructions: 1. install avr-gcc and tools: $ sudo aptitude install gcc-avr avr-libc avrdude 2. download arduino: $ wget http://arduino.googlecode.com/files/arduino-0013-linux2.tgz 3. unpack and add link: $ tar -xzf arduino-0013-linux2.tgz $ ln -s arduino-0013 arduino 4. update Makefile variables INSTALL_DIR and PORT to your needs 5. build it $ make 6. flash it (press reset) $ make upload