Auto shutdown, How?

[Nils Kassube]

Steve Riley wrote:
> On 2013-08-17 08:55:50 Knapp <magick.crow at gmail.com> wrote:
> > I want my daughters computer to shut itself off automatically at
> > 9pm. How can I do this? It would be good if she can't stop it! She
> > has no sudo, really no passwords at all.
> 
> Put a shutdown in root's crontab.

> Then add the following line at the end:
> 0 21 * * * /sbin/shutdown -P now

> She could, of course, power the computer right back up after that.

And if you change the crontab line like this

* 0-5,21-23 * * * /sbin/shutdown -P now

she can still power it up, but it will shut down again at the next full 
minute until 6am.


Nils