uniq(1) on OpenBSD
The text 9daddb717ea5, as OpenBSD 5.8, OpenBSD 5.7, OpenBSD 5.6, OpenBSD 5.5, OpenBSD 5.4, OpenBSD 5.3, OpenBSD 5.2, OpenBSD 5.1, OpenBSD 5.0, OpenBSD 4.9 shipped it.
report or filter out repeated lines in a file
Flags it lists
-
-c -
-d -
-f -
-s -
-u