<refmeta>
<refentrytitle>sources.list</refentrytitle>
<manvolnum>5</manvolnum>
+ <refmiscinfo class="manual">APT</refmiscinfo>
</refmeta>
<!-- Man page title -->
<refsect1><title>sources.list.d</title>
<para>The <filename>/etc/apt/sources.list.d</filename> directory provides
- a way to add sources.list entries in separate files whose names end with
- <literal>.list</literal>. The format is the same as for the regular
- <filename>sources.list</filename> file. </para>
+ a way to add sources.list entries in separate files.
+ The format is the same as for the regular <filename>sources.list</filename> file.
+ File names need to end with
+ <filename>.list</filename> and may only contain letters (a-z and A-Z),
+ digits (0-9), underscore (_), hyphen (-) and period (.) characters.
+ Otherwise they will be silently ignored.</para>
</refsect1>
<refsect1><title>The deb and deb-src types</title>
<command>dd</command>
commands to perform the file transfers from the remote.</para></listitem>
</varlistentry>
+
+ <varlistentry><term>more recongnizable URI types</term>
+ <listitem><para>
+ APT can be extended with more methods shipped in other optional packages which should
+ follow the nameing scheme <literal>apt-transport-<replaceable>method</replaceable></literal>.
+ The APT team e.g. maintain also the <literal>apt-transport-https</literal> package which
+ provides access methods for https-URIs with features similiar to the http method, but other
+ methods for using e.g. debtorrent are also available, see <citerefentry>
+ <refentrytitle><filename>apt-transport-debtorrent</filename></refentrytitle>
+ <manvolnum>1</manvolnum></citerefentry>.
+ </para></listitem>
+ </varlistentry>
</variablelist>
</para>
</refsect1>