Having some fun with stdout

waves.rb

class String
  def rotate(n = 1)
    chars.rotate(n).join
  end

  def rotate!(n = 1)
    replace(rotate(n))
  end
end

line = '`·.¸¸.·´¯' * 10
1.upto(100) do
  line.rotate!
  $stdout.print(line + "\r")
  sleep(0.05)
end