dst_test(1) on Linux
The text b974a3f7d3df, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy) shipped it.
a Twinhan DST and clones test utility.
Flags it lists
-
-a -
-c -
-g -
-i -
-p -
-r -
-s -
-t