CentOS - Dec 2009 - Deleting contents of /tmp on shutdown

I use to have a line of code in /etc/init.d/syslog (I think this was the
file) to delete the contents of my /tmp directory on shutdown. It originally
came from fedora.  I have searched for it but can't find it again.

Anyone happen to have it?

TIA

On Sat, Dec 12, 2009 at 02:33:33PM -0500, Thomas Dukes
wrote:
> I use to have a line of code in /etc/init.d/syslog (I think this was the
> file) to delete the contents of my /tmp directory on shutdown.
In /etc/init.d/syslog?  That seems like a bad place to put it, even if
it does check (as I assume it must have) the current runlevel, and only
deletes in runlevels [016] or [06]; if it gets killed too early, you
could delete a file from /tmp that is needed to cleanly kill off a
subsequent process.

/etc/init.d/halt calls /sbin/halt.local, which might be a good place,
except that it's already umounted nonessential filesystems by then, so
if you have /tmp on a different fs putting it there won't work.  (You
could mount it from halt.local, clean it, then umount it, but that seems
extremely kludgy.)  You could write your own simple script and link it in
/etc/rc[06].d/ to run after S00killall but before S01halt or S01reboot.
(It is not clear to me whether enough processes are killed off that cleaning
/tmp is safe here; might be worth testing in a noncritical environment
first.)

--keith


-- 
kkeller at speakeasy.net

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> -----Original Message-----
> From: centos-bounces at centos.org 
> [mailto:centos-bounces at centos.org] On Behalf Of Keith Keller
> Sent: Saturday, December 12, 2009 4:50 PM
> To: CentOS mailing list
> Subject: Re: [CentOS] Deleting contents of /tmp on shutdown
> 
> On Sat, Dec 12, 2009 at 02:33:33PM -0500, Thomas Dukes wrote:
> > I use to have a line of code in /etc/init.d/syslog (I think 
> this was 
> > the
> > file) to delete the contents of my /tmp directory on shutdown.
> 
> In /etc/init.d/syslog?  That seems like a bad place to put 
> it, even if it does check (as I assume it must have) the 
> current runlevel, and only deletes in runlevels [016] or 
> [06]; if it gets killed too early, you could delete a file 
> from /tmp that is needed to cleanly kill off a subsequent process.
> 
> /etc/init.d/halt calls /sbin/halt.local, which might be a 
> good place, except that it's already umounted nonessential 
> filesystems by then, so if you have /tmp on a different fs 
> putting it there won't work.  (You could mount it from 
> halt.local, clean it, then umount it, but that seems 
> extremely kludgy.)  You could write your own simple script 
> and link it in /etc/rc[06].d/ to run after S00killall but 
> before S01halt or S01reboot.
> (It is not clear to me whether enough processes are killed 
> off that cleaning /tmp is safe here; might be worth testing 
> in a noncritical environment
> first.)
> 
> --keith
As I said, I think that was were the code was added.  Just not really sure.
I remember the files were deleted on shutdown/reboot.

Been reading and have seen it may be better to delete the tmp directory
files on boot before any services start.  What do you think?

Thanks,

Eddie