    # File lib/chef/knife/search.rb, line 77
          def run
            if config[:query] && @name_args[1]
              ui.error "please specify query as an argument or an option via -q, not both"
              ui.msg opt_parser
              exit 1
            end
            raw_query = config[:query] || @name_args[1]
            if !raw_query || raw_query.empty?
              ui.error "no query specified"
              ui.msg opt_parser
              exit 1
            end

            if name_args[0].nil?
              ui.error "you must specify an item type to search for"
              exit 1
            end

            if name_args[0] == 'node'
              ui.use_presenter Knife::Core::NodePresenter
            end

            q = Chef::Search::Query.new
            query = URI.escape(raw_query,
                               Regexp.new("[^#{URI::PATTERN::UNRESERVED}]"))

            result_items = []
            result_count = 0

            rows = config[:rows]
            start = config[:start]
            begin
              q.search(@name_args[0], query, config[:sort], start, rows) do |item|
                formatted_item = format_for_display(item)
                if formatted_item.respond_to?(:has_key?) && !formatted_item.has_key?('id')
                  formatted_item['id'] = item.has_key?('id') ? item['id'] : item.name
                end
                result_items << formatted_item
                result_count += 1
              end
            rescue Net::HTTPServerException => e
              msg = Chef::JSONCompat.from_json(e.response.body)["error"].first
              ui.error("knife search failed: #{msg}")
              exit 1
            end

            if ui.interchange?
              output({:results => result_count, :rows => result_items})
            else
              ui.msg "#{result_count} items found"
              ui.msg("\n")
              result_items.each do |item|
                output(item)
                ui.msg("\n")
              end
            end
          end