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How To add Extra Repositories in Ubuntu Linux

A software repository is a storage location from which software packages may be retrieved and installed on a computer.

It's very easy to add extra repositories in Ubuntu Linux. In this article I'll show you how to add some useful repositories to your Ubuntu distribution.

First, we have to backup our sources.list by typing in terminal:

# sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

To add extra repositories proceed with the next steps.

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