[lfs-support] ABOUT LFS

Alice Wonder alicewonder at shastaherps.org
Sat Sep 7 22:46:35 PDT 2013

On Sun, 2013-09-08 at 03:44 +0100, Ken Moffat wrote:

>  For a safer system, limiting privileges is a good idea.  To shut
> down a *desktop* box, I'm happy using a hack to let a user run
> 'shutdown' - but I'm the only user of those machines, and I can
> only run the user shutdown script from a tty (not an xterm, nor when
> using ssh to connect to a system).  Some other people use 'sudo' and
> allow (some) normal users to shutdown, others run desktop
> environments where ConsoleKit gives permissions to whoever is at the
> physical machine.  Every alternative method has its own advantages
> an disadvantages.

I've seen ways of tricking ConsoleKit before, I just use whatever my
distro uses as they fix known vulnerabilities with the method they offer
- and for my LFS system, this is probably not the best solution but I
just have a cron job running as root once a minute that looks
for /tmp/shutdown and /tmp/reboot - and then executes the appropriate
command if either exist.

That means anyone who has write access to /tmp can shutdown or reboot
but I'm the only user. That way though I don't have to either use sudo
(I dis-like sudo) or su to root.

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