all.rb

#!/usr/bin/env ruby
# coding: utf-8

require "oauth"
require "json"

while true
  begin
    c = OAuth::Consumer.new("","", {:site => "http://twitter.com"})
    t = OAuth::AccessToken.new(c, "", "")
    JSON.parse(t.get("/statuses/user_timeline.json?count=200").body).each do |p|
      puts "#{p["id"]}: #{p["text"]}"
      p t.post("/statuses/destroy/#{p["id"]}.json") rescue nil
     end
    sleep 60
  rescue
    puts "fail!"
    sleep 20
  end
end