nauty-shortg(1) on Linux
The text 19253f7c4708, as Debian 9 (Stretch) shipped it.
remove isomorphs from a file of graphs
Flags it lists
-
-K# -
-S -
-Tdir -
-d -
-fxxx -
-g -
-i# -
-k -
-q -
-s -
-t -
-u -
-v -
-z