uniq(1) on FreeBSD
The text 0cff65a6472a, as FreeBSD 4.11-RELEASE, FreeBSD 4.10-RELEASE, FreeBSD 4.9-RELEASE, FreeBSD 4.8-RELEASE, FreeBSD 4.7-RELEASE shipped it.
report or filter out repeated lines in a file
Flags it lists
-
-c -
-d -
-f -
-i -
-s -
-u