uniq(1) on FreeBSD
The text c55cda8cc91f, as FreeBSD 2.2.2-RELEASE, FreeBSD 2.1.7.1-RELEASE, FreeBSD 2.1.7-RELEASE, FreeBSD 2.1.5-RELEASE, FreeBSD 2.0.5-RELEASE shipped it.
report or filter out repeated lines in a file
Flags it lists
-
-c -
-d -
-f -
-s -
-u