# File lib/net/ssh/shell.rb, line 114
      def separator
        @separator ||= begin
          s = Digest::SHA1.hexdigest([session.object_id, object_id, Time.now.to_i, Time.now.usec, rand(0xFFFFFFFF)].join(":"))
          s << Digest::SHA1.hexdigest(s)
        end
      end