ogrmerge(1) on Linux
The text b4133a7c8c02, as Debian 10 (Buster) shipped it.
Merge several vector datasets into a single one.
Flags it lists
-
-append -
-dsco -
-f -
-nln -
-o -
-overwrite_ds -
-overwrite_layer -
-src_geom_type -
-update