Sometimes you want to restore (or clone) your favorite (studio ;-)) installation, to a clean installed, freshly formatted machine, without having to manually install all your favorite applications again. This can be done, by exporting the list of all your installed applications to a text file and reinstall all your applications listed in the text file to your freshly formatted machine (as Hannibal would have said "I love it when a plan comes together").

Of course there is no exhaustive and conclusive answer to "how to EQ vocals", but there are some guidelines you can follow and that offer you reasonable results even if you're not into audio.

If you want to connect to your Digital Video Recorder (DVR) or ownCloud installation from the internet, you need to know to which IP address you need to connect (See this DVR article as well). The bad thing however is that the most of us don't have a fixed IP address on the internet (this might change in the future with IPv6). This means your IP address can change in time. There are several payed services to solve this problem like DynDNS, DuckDNS, DtDNS, No-IP, etc. Most of the time you are the only user of the services you are hosting at home, if so than there is a cheap solution.

Having a fixed (or static) IP address on your Raspberry Pi, comes in handy if you want to access your Raspberry Pi from the internet (for a how to about port forwarding, read this article). As you might want to use ownCloud for instance.