Importance of Repositories and adding it in Ubuntu.

This describes how to manage software repositories in Ubuntu 8.04 , Ubuntu 8.10 , Ubuntu 9.04, Ubuntu 9.10, and Ubuntu 10.04

GUI-based repository management is normally accomplished via the “Software Sources” panel. This panel can be accessed via two menus:

  • Software Sources: System > Administration > Software Sources.
  • Synaptic: System > Administration > Synaptic >> Settings >> Repositories.
  • You will have to enter your password to gain access to the page.
Synaptic packet manager
Synaptic packet manager

Ubuntu Software Tab

Software sources
Software sources

Adding Ubuntu Software Repositories

The “Ubuntu Software” tab displays a list of repositories or “Channels”.

  • The following repositories are enabled by default:
    • “Canonical-supported Open Source software (main)”
    • “Proprietary drivers for devices (restricted)” [hardware-dependent]
    • “Source Code”
    • In Ubuntu 9.04  and later, the main, universe, restricted and multiverse repositories are enabled by default.
  • Select other repositories to gain access to proprietary drivers, copyrighted material, source code, etc.
    • “Community-maintained Open Source software – (universe)”
    • “Proprietary drivers for devices (restricted)” – Commonly used software which is not available under a completely free license. This software is supported by the Ubuntu team.
    • “Software restricted by copyright or legal issues (multiverse)” – Software that is “not free” and may require licensing. This software is not supported.
  • Reload. Any time a setting is changed which alters a repository setting the Reload button should be selected to allow the applicable repository database to be updated. Repository information will not normally be updated until the ‘Reload’ button is selected. If you do not wish to use ‘Reload’, select ‘Close’ to exit without updating the database.
  • this will help you to make the actual change that you want in the system after installation of any software.

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