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Date: Thu, 3 May 2007 18:53:11 +0200
From: Christoph Schug <chris+freebsd-questions@schug.net>
To: sac <sacchi@gmail.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Why doesn't FreeBSD clear /tmp on bootup?
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On Thu, May 03, 2007, sac wrote:

> I've seen OpenBSD and some other variants of Unix clearing /tmp on
> bootup. But FreeBSD doesn't seem to do so.

This one is configurable in /etc/rc.conf, take a look at
/etc/defaults/rc.conf for default settings and explanations:

| clear_tmp_enable="NO"   # Clear /tmp at startup.
| clear_tmp_X="YES"       # Clear and recreate X11-related directories in /tmp

OTOH you can configure /tmp/ as memory file system (which is clear with
every reboot cause of its nature) using settings like

| tmpmfs="YES"
| tmpsize="128m"
| tmpmfs_flags="-S"

in /etc/rc.conf (in this example 128 MB of /tmp without soft-updates).

-cs