humanize_bytes.rb

def self.humanize_bytes(size)
  %w[b Kb Mb Gb Tb Pb Eb Zb Yb].reduce(size) do |magnitude, unit|
    break "#{magnitude}#{unit}" if magnitude < 1024
    magnitude / 1024
  end
end

def self.humanize_bytes(size)
  return "#{size}b"  if  size          < 1024
  return "#{size}Kb" if (size /= 1024) < 1024
  return "#{size}Mb" if (size /= 1024) < 1024
  return "#{size}Gb" if (size /= 1024) < 1024
  return "#{size}Tb" if (size /= 1024) < 1024
  return "#{size}Pb" if (size /= 1024) < 1024
  return "#{size}Eb" if (size /= 1024) < 1024
  return "#{size}Zb" if (size /= 1024) < 1024
  return "#{size}Yb" if  size /= 1024
end