sfddiff(1) on Linux
The text 4c789978ad5c, as Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.
compare two font files
Flags it lists
-
--exact -
--help -
--ignorebitmaps -
--ignoregpos -
--ignoregsub -
--ignorehints -
--ignorenames -
--usage -
--version -
--warn