using_barby_to_generate_barcodes_with_ruby.rb

# Gemfile, run bundle install after adding
gem 'barby'
gem 'chunky_png'

# some code to generate the png file using 3 of 9 barcode style
require 'barby'
require 'barby/barcode/code_39'
require 'barby/outputter/png_outputter'

barcode_value = "099999333"
full_path = "/somewhere/barcode_#{barcode_value}.png"
barcode = Barby::Code39.new(barcode_value)
File.open(full_path, 'w') { |f| f.write barcode.to_png(:margin => 3, :xdim => 2, :height => 55) }