 commands
   clear                                   clear screen
   format              <csv/json>          specify results format
   help/:h                                 show help
   dir                 <PATH/reset>        specify directory to save results in
   page                <on/off>            enable/disable displaying results via pager
   quit/exit/bye/:q                        quit
   write               <on/off>            enable/disable writing results to local filesystem
   @<path>                                 execute query from a local file
