[ Avaa Bypassed ]

<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" type="topic" style="task" id="addremove-sources" xml:lang="hi">

  <info>
    <credit type="author">
      <name>Ubuntu Documentation Team</name>
    </credit>
    <desc>
      Add repositories to extend the software sources Ubuntu uses for 
      installation and upgrades.
    </desc>
    <include xmlns="http://www.w3.org/2001/XInclude" href="legal.xml"/>
    <link type="guide" xref="addremove"/>
    <revision version="18.04" date="2018-03-18" status="review"/>
  </info>

  <title>
    Add software repositories
  </title>

  <p>
    Software is available from third-party sources, as well as from the default 
    Ubuntu software repositories. If you want to install software from a 
    third-party software repository, you must add it to Ubuntu's list of 
    available repositories.
  </p>

  <note style="warning">
    <p>
      Only add software repositories from sources that you trust!
    </p>
    <p>
      Third-party software repositories are not checked for security or 
      reliability by Ubuntu members, and may contain software which is harmful 
      to your computer.
    </p>
  </note>

<p>
</p>
   <p>
   To add a repository:
   </p>

  <steps>
    <item>
      <p>
        Click the <app>Ubuntu Software</app> icon in the <gui>Dock</gui>, or search
        for <input>Software</input> in the <em>Activities</em> search bar.
      </p>
    </item>
    <item>
      <p>
        When <app>Ubuntu Software</app> launches, click <gui>Software &amp; Updates</gui>
      </p>
    </item>
    <item>
      <p>
        You will be asked to enter your password. Once you have done that, 
        switch to the <gui>Other Software</gui> tab.
      </p>
    </item>
    <item>
      <p>
        Click <gui>Add</gui> and enter the APT line for the repository. This 
        should be available from the website of the repository, and should look 
        similar to:
      </p>
      <p>
        <code its:translate="no">deb http://archive.ubuntu.com/ubuntu/ focal main</code>
      </p>
    </item>
    <item>
      <p>
        Click <gui>Add Source</gui> then close the <app>Software &amp; Updates</app> window. 
        <app>Ubuntu Software</app> will then check your software sources for new 
        updates.
      </p>
    </item>
    <item>
      <p>
        Most repositories provide a signing key to be able to verify downloaded packages.
        So in addition to the steps above, you should follow possible instructions on how to
        download and install the signing key (GPG key).
      </p>
    </item>
  </steps>

  <section id="canonical-partner">
    <title>
      Activate the Canonical Partner repository
    </title>
    <p>
      The Canonical Partner repository offers some proprietary applications 
      that don't cost any money to use but are closed source. They include 
      software like <app>Adobe Flash Plugin</app>. Software in this
      repository will appear in <app>Ubuntu Software</app> search results
      but won't be installable until this repository is enabled.
    </p>
    <p>
      To enable the repository, follow the steps above to open the <gui>Other 
      Software</gui> tab in <app>Software &amp; Updates</app>. If you see the 
      <gui>Canonical Partners</gui> repository in the list, make sure it is 
      checked then close the <app>Software &amp; Updates</app> window. If you don't see it, click 
      <gui>Add</gui> and enter:
    </p>
    <p>
      <code its:translate="no">deb http://archive.canonical.com/ubuntu focal partner</code>
    </p>
    <p>
      Click <gui>Add Source</gui> then close the <app>Software &amp; Updates</app> window. Wait a 
      moment for <app>Ubuntu Software</app> to download the repository information.
    </p>
  </section>

</page>