diff(1) on FreeBSD
The text b4c66794ffc5, as FreeBSD 4.7-RELEASE, FreeBSD 4.6.2-RELEASE, FreeBSD 4.6-RELEASE, FreeBSD 4.5-RELEASE, FreeBSD 4.4-RELEASE, FreeBSD 4.3-RELEASE, FreeBSD 4.2-RELEASE, FreeBSD 4.1.1-RELEASE, FreeBSD 4.1-RELEASE, FreeBSD 4.0-RELEASE shipped it.
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Flags it lists
-
--brief -
--changed-group-format -
--context -
--ed -
--exclude -
--exclude-from -
--expand-tabs -
--forward-ed -
--horizon-lines -
--ifdef -
--ignore-all-space -
--ignore-blank-lines -
--ignore-case -
--ignore-matching-lines -
--ignore-space-change -
--initial-tab -
--label -
--left-column -
--line-format -
--minimal -
--new-file -
--new-group-format -
--new-line-format -
--old-group-format -
--old-line-format -
--paginate -
--rcs -
--recursive -
--report-identical-files -
--sdiff-merge-assist -
--show-c-function -
--show-function-line -
--side-by-side -
--speed-large-files -
--starting-file -
--suppress-common-lines -
--text -
--unchanged-group-format -
--unchanged-line-format -
--unidirectional-new-file -
--unified -
--version -
--width -
-B -
-C -
-D -
-F -
-H -
-I -
-L -
-N -
-P -
-S -
-T -
-U -
-W -
-X -
-a -
-b -
-c -
-d -
-e -
-f -
-h -
-i -
-l -
-lines -
-n -
-o -
-q -
-r -
-s -
-t -
-u -
-v -
-w -
-x -
-y