/*REXX pgm checks to see if a directory is empty; if not, lists entries.*/
parse arg xdir;  if xdir='' then xdir='\someDir' /*Any DIR? Use default.*/
@.=0                                   /*default in case ADDRESS fails. */
trace off                              /*suppress REXX err msg for fails*/
address system 'DIR' xdir '/b' with output stem @.  /*issue the DIR cmd.*/
if rc\==0  then do                                  /*an error happened?*/
                say '***error!*** from DIR' xDIR    /*indicate que pasa.*/
                say 'return code='  rc              /*show the ret Code.*/
                exit rc                             /*exit with the  RC.*/
                end                                 /* [↑]  bad address.*/
#=@.rc                                              /*number of entries.*/
if #==0  then #='   no   '                          /*use a word, ¬zero.*/
say center('directory ' xdir " has "     #     ' entries.',79,'─')
exit @.0+rc                            /*stick a fork in it, we're done.*/