remind(1) on Linux
The text 3913c1b1dc94, as Debian 4.0 (Etch) shipped it.
a sophisticated reminder service
Flags it lists
-
-b -
-cn -
-dchars -
-e -
-h -
-i -
-k -
-l -
-m -
-n -
-o -
-pn -
-r -
-sn -
-t -
-v -
-x