idn2(1) on Linux
The text 17c6dc8d658a, as Debian 8 (Jessie) shipped it.
Libidn2 Internationalized Domain Names (IDNA2008) conversion
Flags it lists
-
--debug -
--help -
--lookup -
--quiet -
--register -
--version -
-V -
-h -
-l -
-r