uniq(1) on FreeBSD
The text 5a54d4a3e3ff, as FreeBSD 2.2.8-RELEASE, FreeBSD 2.2.7-RELEASE, FreeBSD 2.2.6-RELEASE shipped it.
report or filter out repeated lines in a file
Flags it lists
-
-c -
-d -
-f -
-i -
-s -
-u