xfd(1) on Linux
The text 1db8a22591de, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
display all the characters in an X font
Flags it lists
-
-bc -
-box -
-center -
-columns -
-fa -
-fn -
-rows -
-start