print_rpi,for,dymo.rb

#!/usr/bin/env ruby


loop do
  printing = false
  driver_pid = nil
  `ps aux | grep -i [d]ymo`.split(/\n/).each do |line|
    parts = line.split
    user = parts[0]
    pid = parts[1]
    name = parts[10]
    printing = true if user == 'lp'
    driver_pid = pid if name =~ %r{usb://}
  end
  if driver_pid && !printing
    `kill -9 #{driver_pid}`
    puts "#{driver_pid} was killed"
  end
  sleep 0.1
end

# Script Usage:

   sudo ruby dymo_speed.rb