shpcat - appends the records of a source shapefile
shpcat [-v] [-f] from_shpfile to_shpfile
Appends the content of a source shapefile into a destination shapefile. Both files must be the same shapefile type.
shpcat -v shapefile1 shapefile2
shpcat is part of shapelib, maintained by Frank Warmerdam. This guide was created by Eduardo Patoo Kanegae and converted to manpage by Johan Van de Wauw.