Update VirtualBox on Ubuntu

This video show how to update VirtualBox, for example if you installed Virtualbox from Ubuntu repository, and now you want the latest version.
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My Ubuntu playlist
• Ubuntu Linux
For more video about Virtualbox:
• Virtualbox
Version francaise - French version of this video:
• Mise à jour de Virtual...
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0:00 intro
1:23 How to have information about the current VirtualBox installed
2:26 How to show current version and repository used from command line.
5:30 To install the recent version of Virtualbox
11:10 to download and install extension pack for VirtualBox.
11:54 Download an old version of VirtualBox or extension pack.