int isDir(char *pathName) {
     #ifdef DEBUG
     printf("isDir(%s)\n", pathName); fflush(NULL);
     #endif
     struct stat s;
     if(stat(pathName, &s) == -1) {
          printf("Cannot stat %s\n", pathName);
          return FALSE;  // not fatal
     }

     if(s.st_mode == S_IFDIR)
          return TRUE;
     else
          return FALSE;
}