Which commands (in /bin & /usr/bin) must have set user ID (for root)

[guy at sun.UUCP]

>     Anyway, if a setuid program overwrites itself, it is no longer setuid!
> It says in the manual page for write (2):

It says this *in the 4BSD manual page for write(2)*; this is a Berkeleyism.
I consider it to be an airbag; I'm not sure it's worth putting in a hack
like this to protect people who don't remember to make set-UID programs
writable only by the owner.  (Also note that it doesn't apply if the process
doing the write has a *real* UID of "root".)
-- 
	Guy Harris
	{ihnp4, decvax, seismo, decwrl, ...}!sun!guy
	guy at sun.com (or guy at sun.arpa)