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

Edit File: extensions-lockdown.page

<credit type="author copyright">
      <name>Petr Kovar</name>
      <email>pknbe@volny.cz</email>
      <years>2014</years>
    </credit>

<desc>Disallow the user to enable or disable GNOME Shell extensions.</desc>
  </info>

<title>Lock down enabled extensions</title>
  
  <p>In GNOME Shell, you can prevent the user from enabling or disabling
  extensions by locking down the
  <code>org.gnome.shell.enabled-extensions</code> and
  <code>org.gnome.shell.development-tools</code> keys. This allows you to
  provide a set of extensions that the user has to use.</p>
   
  <p>Locking down the <code>org.gnome.shell.development-tools</code> key
  ensures that the user cannot use GNOME Shell’s integrated debugger and
  inspector tool (<app>Looking Glass</app>) to disable any mandatory
  extensions.</p>
   
  <steps>
    <title>Lock down the org.gnome.shell.enabled-extensions and
    org.gnome.shell.development-tools keys</title>
    <item>
      <p>Create a <code>user</code> profile in
      <file>/etc/dconf/profile/user</file>:</p>
      <listing>
        <code>
user-db:user
system-db:local
</code>
      </listing>
    </item>
    <item>
      <p>Create a <code>local</code> database for machine-wide settings in
      <file>/etc/dconf/db/local.d/00-extensions</file>:</p>
      <listing>
        <code>
[org/gnome/shell]
# List all extensions that you want to have enabled for all users
enabled-extensions=['<input>myextension1@myname.example.com</input>', '<input>myextension2@myname.example.com</input>']
# Disable access to Looking Glass
development-tools=false
</code>
      </listing>
      <p>The <code>enabled-extensions</code> key specifies the enabled
      extensions using the extensions’ uuid
      (<code>myextension1@myname.example.com</code> and
      <code>myextension2@myname.example.com</code>).</p>
      <p>The <code>development-tools</code> key is set to false to disable
      access to Looking Glass.</p>
    </item>
    <item>
      <p>Override the user’s setting and prevent the user from changing it in
      <file>/etc/dconf/db/local.d/locks/extensions</file>:</p>
      <listing>
        <code>
# Lock the list of enabled extensions
/org/gnome/shell/enabled-extensions
/org/gnome/shell/development-tools
</code>
</listing>
    </item>
    <include href="dconf-snippets.xml"
      xpointer="xpointer(/*/*[@xml:id='dconf-update'])"
      xmlns="http://www.w3.org/2001/XInclude"/>
  </steps>
  
  <p>After locking down the <code>org.gnome.shell.enabled-extensions</code> and
  <code>org.gnome.shell.development-tools</code> keys, any extensions installed
  in <file>~/.local/share/gnome-shell/extensions</file> or
  <file>/usr/share/gnome-shell/extensions</file> that are not listed in the
  <code>org.gnome.shell.enabled-extensions</code> key will not be loaded by
  GNOME Shell, thus preventing the user from using them.</p>

</page>