$ ze-ndc -h
* Trying /etc/ze-filter/ze-ndc.cf
Usage:
   ze-ndc [-h] [-s server] [-p port] command
     Use the ze-ndc script to send a command to the filter.
   Options :
     -h    : This message
     -s    : Server name/address
     -p    : Server port
     -d    : debug
   Commands :
     HELP
     ...
     To know the list of all available commandes type :
            ze-ndc help