Public Domain software in UN*X?

[Andrew Draskoy]

I seem to remember someone saying that the string(3) routines distributed
by Berkley were public domain, and that indeed so were several other library
routines.  If anyone knows *for sure* of something in a UN*X variant that
is public domain, I would like to hear about it - I am trying to compile
a list.  Please reply via mail, I will summarise if there is interest.
-- 
Andrew Draskoy
{akgua,allegra,ihnp4,utcsrgv}!garfield!andrew
The opinions expressed above may not represent those of the author
after he has had some sleep.