Try XEDIT  LDBASE EXEC to  have a look at  what the program  does. You'll
see something like this:
 
/***********************************************************************
 * (copyright/version header deleted)                                  *
 * This  program  allows  you  to interactively  access  the  LISTSERV *
 * database. You will  be prompted for all the  information that might *
 * be required to connect to the  database. It is recommended that you *
 * obtain a copy of the  "Revised LISTSERV: Database functions" manual *
 * (document number  U01-012, available  in 'help' format  through the *
 * "Info DATABASE" command) prior to using this program.               *
 *                                                                     *
 * Syntax: LDBASE  <nodeid>                                            *
 *                                                                     *
 * This will  connect you  to the LISTSERV  database at  the specified *
 * node.  If the  nodeid is  omitted, you  will be  connected to  your *
 * "default" database server.                                          *
 *                                                                     *
 * Note: This program issues a SET LINEDIT OFF command to allow you to *
 * enter double-quotes  et al. The  previous setting is  restored when *
 * you leave the program.                                              *
 *                                                                     *
 ***********************************************************************/
 
I guess you want to do LDBASE UGA, and then enter the search commands.
 
  Eric