Hello, clri showed up in V6 UNIX http://minnie.tuhs.org/cgi-bin/utree.pl?file=V6/usr/man/man8/clri.8 Attached patch adds a history section to man page.
Sevan
Index: sbin/clri/clri.8 =================================================================== RCS file: /cvs/src/sbin/clri/clri.8,v retrieving revision 1.13 diff -u -p -u -r1.13 clri.8 --- sbin/clri/clri.8 6 Aug 2007 19:16:05 -0000 1.13 +++ sbin/clri/clri.8 13 Sep 2016 00:31:50 -0000 @@ -72,6 +72,11 @@ will be able to clean up the resulting m .Xr fsck 8 , .Xr fsdb 8 , .Xr ncheck 8 +.Sh HISTORY +The +.Nm +utility first appeared in +.At v6 . .Sh BUGS If the file is open, the work of .Nm
