# File lib/nanoc/cli/commands/validate-links.rb, line 18
    def run
      require_site

      dir             = site.config[:output_dir]
      index_filenames = site.config[:index_filenames]

      validator = ::Nanoc::Extra::Validators::Links.new(
        dir,
        index_filenames,
        :internal => (options[:external] ? false : true),
        :external => (options[:internal] ? false : true))
      validator.run
    end