idiff(1) on Linux
The text 9232eabc2e97, as Debian 11 (Bullseye) shipped it.
Flags it lists
-
--help -
-a -
-abs -
-fail -
-failpercent -
-hardfail -
-hardwarn -
-o -
-od -
-p -
-q -
-scale -
-v -
-warn -
-warnpercent