--backup until Debian 9 (Stretch);
--help until Debian 9 (Stretch);
--interactive until Debian 9 (Stretch);
--no-dereference until Debian 9 (Stretch);
--no-target-directory until Debian 9 (Stretch);
--preserve until Debian 9 (Stretch);
--progress until Debian 9 (Stretch);
--version until Debian 9 (Stretch);
-P until Debian 9 (Stretch);
-T until Debian 9 (Stretch);
-b until Debian 9 (Stretch);
-h until Debian 9 (Stretch);
-i until Debian 9 (Stretch);
-p until Debian 9 (Stretch).