tlmgr(1) on Linux
The text 7b79354f22c5, as Debian 9 (Stretch) shipped it.
the native TeX Live Manager
Flags it lists
-
--debug-translation -
--gui -
--gui-lang -
--machine-readable -
--no-execute-actions -
--no-persistent-downloads -
--no-require-verification -
--no-verify-downloads -
--package-logfile -
--pause -
--persistent-downloads -
--pin-file -
--repository -
--require-verification -
--usermode -
--usertree -
--verify-downloads