Trivial Ruby object example

greetings.rb

#!/usr/bin/env ruby
# encoding: utf-8

class Greetings
    def greet(recipient = "World")
        puts "Hello, #{recipient}"
    end
end

g = Greetings.new

if ARGV.count < 1
    g.greet()
else
    g.greet(ARGV.first)
end