/usr/share/help/C/ubuntu-help/addremove-ppa.page is in ubuntu-docs 16.04.3.
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type="topic" style="task"
id="addremove-ppa">
<info>
<credit type="author">
<name>Ubuntu Documentation Team</name>
</credit>
<desc>
Add PPAs to help test pre-release or specialty software.
</desc>
<include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
<link type="guide" xref="addremove"/>
<link type="seealso" xref="addremove-sources"/>
<revision version="16.04" date="2016-03-13" status="review"/>
</info>
<title>
Add a Personal Package Archive (PPA)
</title>
<p>
<em>Personal Package Archives (PPAs)</em> are software repositories designed
for Ubuntu users and are easier to install than other third-party
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>
<steps>
<title>
Install a PPA
</title>
<item>
<p>
On the PPA's overview page, look for the heading <gui>Adding this PPA to
your system</gui>. Make a note of the PPA's location, which should look
similar to: <code>ppa:mozillateam/firefox-next</code>.
</p>
</item>
<item>
<p>
Click the <app>Software</app> icon in the
<gui>Launcher</gui>, or search for <input>Software</input> in the
<gui>Dash</gui>.
</p>
</item>
<item>
<p>
When <app>Software</app> launches, click <gui>Software & Updates</gui>
</p>
</item>
<item>
<p>
Switch to the <gui>Other Software</gui> tab.
</p>
</item>
<item>
<p>
Click <gui>Add</gui> and enter the <code>ppa:</code> location.
</p>
</item>
<item>
<p>
Click <gui>Add Source</gui>. Enter your password in the Authenticate
window.
</p>
</item>
<item>
<p>
Close the <app>Software & Updates</app> window. <app>Software</app> will then
check your software sources for new software.
</p>
</item>
</steps>
</page>
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