Capistrano task to tail server log

log_tail.rb

namespace :log do
  desc "tail log file"
  task :tail, :roles => :app do
    run "tail -n 200 -f #{shared_path}/log/#{stage}.log" do |channel, stream, data|
      trap("INT") { puts ' Log tailing finished'; exit 0; }
      puts data
      break if stream == :err
    end
  end
end