unfollowold.rb

require 'rubygems'
require 'optiflag'
require 'twitter'

module DBChecker extend OptiFlagSet
  flag "password"
  flag "user"
  flag "days"

  and_process!
end 

username = ARGV.flags.user
password = ARGV.flags.password
days = ARGV.flags.days

#clear ARGV for gets to work
ARGV.clear

cutoff_date = DateTime.now - days.to_i

httpauth = Twitter::HTTPAuth.new(username, password)
twitter = Twitter::Base.new(httpauth)

page = 1
begin
  friends = twitter.friends(:page => page)
  friends.each do |friend|
    last_status_update = DateTime.parse(friend.status.created_at) unless friend.status.nil?
    if (last_status_update.nil? or last_status_update <= cutoff_date)
      puts "Unfollow #{friend.name}?"  
      STDOUT.flush  
      des = gets.chomp  
      if (des.eql?("Y") or des.eql?("y") or des.eql?("yes") or des.eql?("Yes") or des.eql?("YES"))
        twitter.friendship_destroy(friend.id)
      end
    end
  end
  page = page + 1
end until friends.length ==0