# File lib/murder/murder.rb, line 120
  def require_tag
    if !(temp_tag = (default_tag if default_tag != "") || ENV['tag'])
      puts "You must specify a 'tag' parameter to identify the transfer"
      exit(1)
    end

    if (temp_tag.include?("/"))
      puts "Tag cannot contain a / character"
      exit(1)
    end

    set :tag, temp_tag
    set :filename, "/tmp/#{tag}.tgz"
  end