What you need for this book

This book covers Ubuntu Server in depth, and in order to follow along, you'll need to download Ubuntu Server 16.04 and have a machine or two to practice on. It really doesn't matter if you use virtual or physical machines, as the nature of the machine is irrelevant so long as it can run Ubuntu. Virtual machines have the added benefit of snapshots, which you can use to test and roll back modifications to the server.

In the case of virtual machines, it's recommended to use bridged mode for networking so that each VM can see each other easily over the network. It's a good idea to use multiple machines if you can, since several chapters will include networking concepts, such as connecting to other hosts via SSH, setting ...

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