def do_cons(self, params):
        """
\x1b[1mNAME\x1b[0m
        cons - Executes the cons four-letter command

\x1b[1mSYNOPSIS\x1b[0m
        cons [hosts] [match]

\x1b[1mOPTIONS\x1b[0m
        * hosts: the hosts to connect to (default: the current connected host)
        * match: only output lines that include the given string (default: '')

\x1b[1mEXAMPLES\x1b[0m
        > cons
        /127.0.0.1:40535[0](queued=0,recved=1,sent=0)
        ...

        """
        hosts = params.hosts if params.hosts != "" else None

        if hosts is not None and invalid_hosts(hosts):
            self.show_output("List of hosts has the wrong syntax.")
            return

        if self._zk is None:
            self._zk = XClient()

        try:
            content = get_matching(self._zk.cons(hosts), params.match)
            self.show_output(content)
        except XClient.CmdFailed as ex:
            self.show_output(str(ex))
\x1b[1mNAME\x1b[0m
        cons - Executes the cons four-letter command

\x1b[1mSYNOPSIS\x1b[0m
        cons [hosts] [match]

\x1b[1mOPTIONS\x1b[0m
        * hosts: the hosts to connect to (default: the current connected host)
        * match: only output lines that include the given string (default: '')

\x1b[1mEXAMPLES\x1b[0m
        > cons
        /127.0.0.1:40535[0](queued=0,recved=1,sent=0)
        ...