Capistrano function to upload files displaying a progress percentage.

upload_progress.rb

  desc "Uploads a file displaying the progress"
  def upload_progress(source, target)
    upload(source, target, :via => :sftp) do |event, options, *others|
      if event.to_s == "put"
        print ("\r  * " + (("#{others[1]}".to_f / "#{others[0].size}".to_f) * 100).round(2).to_s + "%").ljust(10, ' ')
      elsif event.to_s == "close"
        print "\r"
      end
    end
  end