Installing VirtualBox Guest Additions from the Command Line

VirtualBox Guest Additions helps improve a VM's performance and usability. The biggest plus I see going for it is the dynamic screen resizing of the guest window.

If you are using a supported OS with a GUI, installing the guest additions is as simple as clicking on the menu "Devices --> Insert Guest Additions CD Image" and the installation follows.

On an OS without GUI, generally the server versions, you will have to do the following operations from the CLI to install the guest additions:

References:
http://andrewelkins.com/linux/install-virtualbox-guest-additions-command-line/

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