osmium-merge(1) on Linux
The text 2a3411224784, as Debian 9 (Stretch) shipped it.
merge several sorted OSM files into one
Flags it lists
-
--fsync -
--generator -
--help -
--input-format -
--output -
--output-format -
--output-header -
--overwrite -
--verbose -
-F -
-O -
-f -
-h -
-o -
-v