ldns-zsplit(1) on Linux
The text fa3e33675b32, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
split up a zone file
Flags it lists
-
-n -
-o -
-v -
-z