unify(1) on Linux
The text 619695095034, as Debian 6.0 (Squeeze) shipped it.
manual page for unify 0.6.3
Flags it lists
-
--context-diffs -
--echo-comments -
--help -
--old-diffs -
--patch-format -
--strip-comments -
--unidiffs -
--use-equals -
--version -
-= -
-P -
-U -
-c -
-e -
-o -
-p -
-s -
-u