gistfile1.rb

# Script for testing disk drive
# Usage: ruby random_stream_test.rb filepath [ size ]

FILENAME = ARGV.first
n = ARGV.last.to_i || 1000
puts "Start writing #{n} lines to file '#{FILENAME}'..."
File.open(FILENAME, "w") do |file|
  n.times do
    str = ''
    100000.times { str << 97 + rand(26) } #Generation long random string
    file.puts str
    file.puts str.hash
  end
end
puts "Start reading with veryfying..."
File.open(FILENAME, "r") do |file|
  counter = 0
  hash = nil
  while (line = file.gets)
    counter+=1
    if (counter.even?)
      print(hash == line.to_i ? "+" : "-")
    else
      hash = line.strip.hash
    end
  end
  puts "\nSize ok" if counter == 2*n
end