expire(8) on Linux
The text 06e7274aef1f, as Debian 3.1 (Sarge) shipped it.
Usenet article and history expiration program
Flags it lists
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-N -
-d -
-f -
-g -
-h -
-i -
-n -
-p -
-r -
-s -
-t -
-v -
-w -
-x -
-z