mc -e /etc/udev/40-libsane.rules ATTRS{idVendor}=="04f9", ENV{libsane_matched}="yes", MODE="664" en GROUP="scanner" sudo service udev restart start xsane as NOT root.
mc -e /etc/udev/ 40-libsane. rules =="04f9" , ENV{libsane_ matched} ="yes", MODE="664" en GROUP="scanner"
ATTRS{idVendor}
sudo service udev restart
start xsane as NOT root.