Ain't tinkering wonderful?! :) Here's script for one button (dunno if this makes it brighter of dimmer)
#!/bin/sh file=/sys/class/backlight/intel_backlight/brightness echo `expr $(cat $file) - 50` > $file and here's the other #!/bin/sh file=/sys/class/backlight/intel_backlight/brightness echo `expr $(cat $file) + 50` > $file (You can try different increments besides 50.)
