Remove all image files not matching Product number regex

kill_me.rb

prod_nums = Product.all.map(&:number).uniq
image_files = Dir.entries("data/products")

image_files.delete(".")
image_files.delete("..")

image_files.each do |imf|
  unless prod_nums.include?(imf.split('_')[0])
    File.delete("data/products/#{imf}"
    print "*"
  end
end