Question: I want to know the exact command to shut down a Red Hat linux server.

I was using `init 0`, but some one said it's not the proper method to shut down my linux server.

If not, what command should I use?

Answer: 
To reboot from the prompt, type:

```
$ shutdown -r now

```

Or, if you want to exit from your system and turn off your machine, type:

```
$ shutdown -h now

```

.. via [manuals](http://www.redhat.com/docs/manuals/linux/RHL-6.1-Manual/getting-started-guide/s1-basics-shutting-down.html).
shutdown -h now