rtcwake(8) on Linux
The text 3b9fd63d5879, as Debian 9 (Stretch) shipped it.
enter a system sleep state until specified wakeup time
Flags it lists
-
--adjfile -
--auto -
--date -
--device -
--dry-run -
--help -
--list-modes -
--local -
--mode -
--seconds -
--time -
--utc -
--verbose -
--version -
-A -
-V -
-a -
-d -
-h -
-l -
-m -
-n -
-s -
-t -
-u -
-v