-

#!/usr/bin/env ruby
require 'yaml'
require 'base64'

contents = "#cloud-config\n" + {
  'bootcmd' => [
    'yum remove zsh -y',
    'yum install zsh -y'
  ]
}.to_yaml

puts "=========================="
puts contents
puts "=========================="
puts Base64.encode64(contents).gsub("\n", '')
puts "=========================="