pdiff(1) on Linux
The text 3c37d2f1ce05, as Debian 3.0 (Woody), Debian 2.2 (Potato) shipped it.
produce a pretty comparison between files
Flags it lists
-
--help -
--lines -
--output -
--quiet -
--version -
--words -
-h -
-l -
-o -
-q -
-v -
-w