vkeybd(1) on Linux
The text 8c82dafce424, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy) shipped it.
virtual keyboard on X
Flags it lists
-
--addr -
--channel -
--config -
--device -
--drum -
--mididev -
--name -
--octave -
--preset -
--seqdev -
--seqidx