fileInfoIcom.rb

#!/usr/bin/env ruby
# encoding: utf-8
require 'date'
data = Hash.new(0)

Dir.glob("#{ARGV[0]}/**/*").reject { |f| File.directory?(f) }.each do |file|
  date = Date.parse(file[/\d{4}\/\d{2}\/\d{2}/])
  size = File.size(file)
  data[date] += size
end

data.keys.sort.each do |date|
  puts "#{date}, #{(data[date].to_f / 2**20).round(2)}"
end