The export
  pg_dump -F c geoview > geoview.dump


The import
  sh /usr/share/postgresql/8.1/contrib/postgis-1.2.0/utils/postgis_restore.pl 
     /usr/share/postgresql/8.1/contrib/postgis-1.2.0/lwpostgis.sql 
     geoview2
     /var/tmp/geoview.dump