x10(1) on Linux
The text 408515356dc9, as Debian 3.0 (Woody), Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm), Debian 1.3 (Bo) shipped it.
Flags it lists
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-c -
-d -
-e -
-f -
-l -
-n -
-q -
-s -
-t -
-v -
-z