rdate(8) on Linux
The text a3373591d9f7, as Debian 13 (Trixie), Debian 12 (Bookworm) shipped it. The page shows this text now.
set the system's date from a remote host
Flags it lists
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-a -
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-n -
-o -
-p -
-s -
-t -
-u -
-v