#!/usr/bin/env ruby
require 'zlib'

block = 1048576
ARGV.each do |filename|
  crc = 0
  file = File.open(filename, 'rb')
  currentbyte = 0
  while (line = file.read(block)) do
    crc = Zlib.crc32(line,crc)
  end
  file.close
  printf("%s %08X\n", filename, crc.to_i)
end