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Raspberry Pi
Raspberry Pi
 units are quickly becoming a user favorite for several use cases. They 
are inexpensive (some models are available for less than 50 USD) and they also use 
very minimal electricity—you can leave them powered on 24/7 with a virtually 
unnoticeable difference in your power bill. In fact, they use about as much power 
as it takes to charge a high-end cellphone. Another benefit is that a Raspberry Pi 
is generally going to be more powerful than an entry-level VPS. The cheapest VPS 
instances typically have just 1 CPU core and 1 GB of RAM, but modern Raspberry 
Pis are produced with quad-core CPUs, as well as 2 GB, 4 GB, or 8 GB of RAM 
depending on which model you purchase. This means that a Raspberry Pi can 
possibly perform better than cheaper VPS instances. The downside to Raspberry Pi 
is that some applications are unavailable, since they utilize ARM CPUs instead of 
x86. This means that some examples in this book will not work on a Pi (although 
the majority will).
Once you've chosen a device to install Ubuntu Server on, we can continue. If you 
chose to utilize a VPS, you can move on to the next chapter, 
Chapter 2
, 
Managing 
Users and Permissions
, as you won't need to walk through the installation process. 
In the case of the Raspberry Pi, if that's your chosen platform, you can skip to 
the end of this chapter for a dedicated section about setting that up. For all other 
devices, continue reading for a walk-through for the Ubuntu Server Live Installer.