Management of /tmp

[Kevin O'Gorman]

I have had some bad experiences with /tmp being overused and filling
the whole root directory, causing a bunch of problems. So I have /tmp
on its own filesystem.  But.....

When I bring down the system, there tend to be some files abandoned in
/tmp, and they are still there after reboot.  I'm guessing that the
bootup process clears /tmp *before* it mounts external filesystems.

So: is there a known fix?  Some simple way to mount /tmp earlier, or
to automatically clear out /tmp after the mount, perhaps?

-- 
Kevin O'Gorman, PhD