&apt-email;
&apt-product;
<!-- The last update date -->
- <date>2012-06-09T00:00:00Z</date>
+ <date>2016-08-16T00:00:00Z</date>
</refentryinfo>
<refmeta>
&synopsis-command-apt-cache;
<refsect1><title>Description</title>
- <para><command>apt-cache</command> performs a variety of operations on APT's package
- cache. <command>apt-cache</command> does not manipulate the state of the system
- but does provide operations to search and generate interesting output
- from the package metadata.</para>
+ <para>
+ <command>apt-cache</command> performs a variety of operations on APT's
+ package cache. <command>apt-cache</command> does not manipulate the
+ state of the system but does provide operations to search and generate
+ interesting output from the package metadata. The metadata is acquired
+ and updated via the 'update' command of e.g. <command>apt-get</command>,
+ so that it can be outdated if the last update is too long ago, but in
+ exchange <command>apt-cache</command> works independently of the
+ availability of the configured sources (e.g. offline).
+ </para>
<para>Unless the <option>-h</option>, or <option>--help</option> option is given, one of the
commands below must be present.</para>
</varlistentry>
<varlistentry><term><option>showsrc</option> <option><replaceable>&synopsis-pkg;</replaceable>…</option></term>
- <listitem><para><literal>showsrc</literal> displays all the source package records that match
- the given package names. All versions are shown, as well as all
- records that declare the name to be a binary package.</para></listitem>
+ <listitem><para><literal>showsrc</literal> displays all the
+ source package records that match the given package names. All
+ versions are shown, as well as all records that declare the name
+ to be a binary package. Use <option>--only-source</option> to
+ display only source package names.
+ </para></listitem>
</varlistentry>
<varlistentry><term><option>dump</option></term>
<varlistentry><term><option>--implicit</option></term>
<listitem><para>Per default <command>depends</command> and <command>rdepends</command>
print only dependencies explicitly expressed in the metadata. With this flag
- it will also show dependencies implicitely added based on the encountered data.
- A <literal>Conflicts: foo</literal> e.g. expresses implicitely that this package
+ it will also show dependencies implicitly added based on the encountered data.
+ A <literal>Conflicts: foo</literal> e.g. expresses implicitly that this package
also conflicts with the package foo from any other architecture.
Configuration Item: <literal>APT::Cache::ShowImplicit</literal>.
</para></listitem>
Configuration Item: <literal>APT::Cache::Installed</literal>.</para></listitem>
</varlistentry>
+ <varlistentry><term><option>--with-source</option> <option>&synopsis-param-filename;</option></term>
+ <listitem><para>
+ Adds the given file as a source for metadata. Can be repeated to add multiple files.
+ Supported are currently <literal>*.deb</literal>, <literal>*.dsc</literal>,
+ <literal>*.changes</literal>, <literal>Sources</literal> and
+ <literal>Packages</literal> files as well as source package directories.
+ Files are matched based on their name only, not their content!</para>
+ <para><literal>Sources</literal> and <literal>Packages</literal> can be compressed in any
+ format apt supports as long as they have the correct extension. If you need to store
+ multiple of these files in one directory you can prefix a name of your choice with the
+ last character being an underscore ("<literal>_</literal>"). Example: my.example_Packages.xz</para>
+ <para>Note that these sources are treated as trusted (see &apt-secure;).
+ Configuration Item: <literal>APT::Sources::With</literal>.</para></listitem>
+ </varlistentry>
+
&apt-commonoptions;
</variablelist>