uniq appeared in research Unix version 3. - todd
Index: usr.bin/uniq/uniq.1 =================================================================== RCS file: /cvs/src/usr.bin/uniq/uniq.1,v retrieving revision 1.21 diff -u -p -u -r1.21 uniq.1 --- usr.bin/uniq/uniq.1 23 Dec 2017 00:52:33 -0000 1.21 +++ usr.bin/uniq/uniq.1 2 Nov 2021 14:14:19 -0000 @@ -159,3 +159,8 @@ The historic and .Fl Ns Ar number options have been deprecated but are still supported in this implementation. +.Sh HISTORY +A +.Nm +utility appeared in +.At v3 .
