ruby_to_json.rb

#!/usr/bin/env ruby
require 'json'
data = {
        :net => {
            :hostname => "dqneo.example.com"
        },
        :users => [
            { :name => 'dqneo', :password => 'himitsu' },
        ],
        :tz => "Asia/Tokyo",
}

puts JSON.pretty_generate(data);

=begin
{
  "net": {
    "hostname": "dqneo.example.com"
  },
  "users": [
    {
      "name": "dqneo",
      "password": "himitsu"
    }
  ],
  "tz": "Asia/Tokyo"
}
=end