# File lib/consular/cli.rb, line 166
      def valid_core
        cores = Consular.cores.select { |core| core.valid_system? }
        if cores.nil? || cores.empty?
          say "No valid core was found!. Exiting...", :red
          raise SystemExit
        elsif cores.size > 1
          core_selection cores
        else
          cores.first
        end
      end