cbhistory.rb

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

Dir.chdir
Dir.chdir(FileUtils.mkdir_p('cblog').last)
last_string = nil
loop do
  sleep 1
  string = IO.popen('pbpaste', 'r+') {|io| io.read }
  next if string.nil? || string.empty? || string == last_string
  filename = Time.now.strftime('%Y%m%d_%H%M%S_')
  filename << string[0,8].gsub(/\W/, '_')
  filename << '.txt'
  File.open(filename, 'w') {|f| f.write(string) }
  last_string = string
end