Copy heroku config from one APP to another APP

copy_heroku_config.rb

SOURCE_APP = ARGV[0]
DESTINATION_APP = ARGV[1]

if SOURCE_APP.nil? || DESTINATION_APP.nil?
  puts 'USAGE: ruby copy_heroku_config.rb SOURCE_APP_NAME DESTINATION_APP_NAME'
end

# Parsing heroku configs
configs = `heroku config --app #{SOURCE_APP}`
configs = configs.split('\n')
configs.shift

# Iterating over the configs and setting it in the given app.
configs.each do | config |
  key, value = config.split(':').map(&:strip)
  puts system("heroku config:set #{key}=#{value} --app #{DESTINATION_APP}")
end