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Dir : ~/usr/share/help/C/system-admin-guide/

Edit File: dconf-custom-defaults.page

<credit type="author copyright">
      <name>Ryan Lortie</name>
      <email>desrt@desrt.ca</email>
      <years>2012</years>
    </credit>
    <credit type="author copyright">
      <name>Jeremy Bicha</name>
      <email>jbicha@ubuntu.com</email>
      <years>2012</years>
    </credit>
    <credit type="author copyright">
      <name>Jim Campbell</name>
      <email>jwcampbell@gmail.com</email>
      <years>2012</years>
    </credit>
    <credit type="editor">
      <name>Jana Svarova</name>
      <email>jana.svarova@gmail.com</email>
      <years>2013</years>
    </credit>
    <credit type="copyright editor">
      <name>Ekaterina Gerasimova</name>
      <email>kittykat3756@gmail.com</email>
      <years>2013</years>
    </credit>
    <credit type="editor">
      <name>Petr Kovar</name>
      <email>pknbe@volny.cz</email>
      <years>2019</years>
    </credit>

<desc>Set system-wide default settings using
    <sys its:translate="no">dconf</sys> profiles.</desc>

</info>

<title>Custom default values for system settings</title>

<p>System-wide default settings can be set by providing a default for a key
  in a <sys its:translate="no">dconf</sys> profile. These defaults can be
  overridden by the user.</p>

<section id="example">
  <title>Set a default value</title>

<p>To set a default for a key, the <sys>user</sys> profile must exist and the
  value for the key must be added to a <sys its:translate="no">dconf</sys>
  database.</p>

<comment>
    <cite date="2012-08-14">Jeremy Bicha</cite>
    <p>You don't have to use "local" as the profile name. You can even have
    different profiles for different users. This isn't mentioned because this
    functionality needs something like accountsservice integration to enforce
    this. gnome-control-center integration would be great too.</p>
  </comment>

<steps>
    <title>An example setting the default background</title>
    <item>
      <p>Create the <file its:translate="no">user</file> profile:</p>
      <listing its:translate="no">
        <title><file>/etc/dconf/profile/user</file></title>
<code>
user-db:user
system-db:local
</code>
      </listing>
      <p><input its:translate="no">local</input> is the name of a
      <sys its:translate="no">dconf</sys> database.</p>
    </item>
    <item>
      <p>Create a <em>keyfile</em> for the <input its:translate="no">local</input>
      database which contains the default settings:</p>
      <listing its:translate="no">
        <title><file>/etc/dconf/db/local.d/01-background</file></title>
<code>
# <span its:translate="yes">dconf path</span>
[org/gnome/desktop/background]

# <span its:translate="yes">dconf key names and their corresponding values</span>
picture-uri='file:///usr/local/share/backgrounds/wallpaper.jpg'
picture-options='scaled'
primary-color='000000'
secondary-color='FFFFFF'
</code>
      </listing>
    </item>
    <include href="dconf-snippets.xml"
      xpointer="xpointer(/*/*[@xml:id='dconf-update'])"
      xmlns="http://www.w3.org/2001/XInclude"/>
  </steps>

<note>
    <p>When the <sys its:translate="no">user</sys> profile is created or
    changed, the user will need to log out and log in again before the changes
    will be applied.</p>
  </note>

<p>If you want to avoid creating the <sys its:translate="no">user</sys>
  profile, you can use the <cmd>dconf</cmd> command-line utility to read and
  write individual values or entire directories from and to a
  <sys its:translate="no">dconf</sys> database. For more information, see the
  <link its:translate="no" href="man:dconf"><cmd>dconf</cmd>(1)</link> man
  page.</p>

</section>

</page>