calendarserver_purge_events(8) on Linux
The text bb14010c6d73, as Debian 10 (Buster) shipped it. The page shows this text now.
Calendar Server event clean-up utility
Flags it lists
-
--config -
--days -
--dry-run -
--help -
--verbose -
-d -
-f -
-h -
-n -
-v