&apt-email;
&apt-product;
<!-- The last update date -->
- <date>2012-06-09T00:00:00Z</date>
+ <date>2016-07-08T00:00:00Z</date>
</refentryinfo>
<refmeta>
<filename>&cachedir;/archives/partial/</filename>.</para></listitem>
</varlistentry>
- <varlistentry><term><option>autoclean</option></term>
+ <varlistentry><term><option>autoclean</option> (and the <option>auto-clean</option> alias since 1.1)</term>
<listitem><para>Like <literal>clean</literal>, <literal>autoclean</literal> clears out the local
repository of retrieved package files. The difference is that it only
removes package files that can no longer be downloaded, and are largely
erased if it is set to off.</para></listitem>
</varlistentry>
- <varlistentry><term><option>autoremove</option></term>
+ <varlistentry><term><option>autoremove</option> (and the <option>auto-remove</option> alias since 1.1)</term>
<listitem><para><literal>autoremove</literal> is used to remove packages that were automatically
installed to satisfy dependencies for other packages and are now no longer needed.</para></listitem>
</varlistentry>
<varlistentry><term><option>changelog</option></term>
- <listitem><para><literal>changelog</literal> downloads a package changelog and displays
- it through <command>sensible-pager</command>. The server name and base
- directory is defined in the <literal>APT::Changelogs::Server</literal>
- variable (e.g. <ulink url="http://packages.debian.org/changelogs">packages.debian.org/changelogs</ulink> for
- Debian or <ulink url="http://changelogs.ubuntu.com/changelogs">changelogs.ubuntu.com/changelogs</ulink> for
- Ubuntu).
- By default it displays the changelog for the version that is
- installed. However, you can specify the same options as for
- the <option>install</option> command.
- </para>
+ <listitem><para><literal>changelog</literal> tries to download the
+ changelog of a package and displays it through
+ <command>sensible-pager</command>. By default it
+ displays the changelog for the version that is installed.
+ However, you can specify the same options as for the
+ <option>install</option> command.</para>
</listitem>
</varlistentry>
+ <varlistentry><term><option>indextargets</option></term>
+ <listitem><para>Displays by default a deb822 formatted listing of
+ information about all data files (aka index targets) <command>apt-get
+ update</command> would download. Supports a
+ <option>--format</option> option to modify the output format as
+ well as accepts lines of the default output to filter the records
+ by. The command is mainly used as an interface for external tools
+ working with APT to get information as well as filenames for
+ downloaded files so they can use them as well instead of
+ downloading them again on their own. Detailed documentation is
+ omitted here and can instead be found in the file
+ &apt-acquire-additional-files; shipped by the <package>apt-doc</package> package.
+ </para>
+ </listitem>
+ </varlistentry>
</variablelist>
<term><option>--dry-run</option></term>
<term><option>--recon</option></term>
<term><option>--no-act</option></term>
- <listitem><para>No action; perform a simulation of events that would occur but do not
- actually change the system.
- Configuration Item: <literal>APT::Get::Simulate</literal>.</para>
-
- <para>Simulated runs performed as a user will automatically deactivate locking
- (<literal>Debug::NoLocking</literal>), and if the option
- <literal>APT::Get::Show-User-Simulation-Note</literal> is set
- (as it is by default) a notice will also be displayed indicating that
- this is only a simulation. Runs performed as root do not trigger either
- NoLocking or the notice - superusers should know what they are doing
- without further warnings from <literal>apt-get</literal>.</para>
+ <listitem><para>No action; perform a simulation of events that would occur
+ based on the current system state but do not actually change the
+ system. Locking will be disabled (<option>Debug::NoLocking</option>)
+ so the system state could change while <command>apt-get</command> is
+ running. Simulations can also be executed by non-root users which might
+ not have read access to all apt configuration distorting the simulation.
+ A notice expressing this warning is also shown by default for non-root
+ users (<option>APT::Get::Show-User-Simulation-Note</option>).
+ Configuration Item: <literal>APT::Get::Simulate</literal>.</para>
<para>Simulated runs print out a series of lines, each representing a <command>dpkg</command>
operation: configure (<literal>Conf</literal>), remove (<literal>Remv</literal>)
Configuration Item: <literal>APT::Get::Assume-No</literal>.</para></listitem>
</varlistentry>
- <varlistentry><term><option>-u</option></term><term><option>--show-upgraded</option></term>
- <listitem><para>Show upgraded packages; print out a list of all packages that are to be
- upgraded.
+ <varlistentry><term><option>--no-show-upgraded</option></term>
+ <listitem><para>Do not show a list of all packages that are to be upgraded.
Configuration Item: <literal>APT::Get::Show-Upgraded</literal>.</para></listitem>
</varlistentry>
Configuration Item: <literal>APT::Get::Only-Upgrade</literal>.</para></listitem>
</varlistentry>
+ <varlistentry><term><option>--allow-downgrades</option></term>
+ <listitem><para>This is a dangerous option that will cause apt to continue
+ without prompting if it is doing downgrades. It
+ should not be used except in very special situations. Using
+ it can potentially destroy your system!
+ Configuration Item: <literal>APT::Get::allow-downgrades</literal>. Introduced in APT 1.1.</para></listitem>
+ </varlistentry>
+
+ <varlistentry><term><option>--allow-remove-essential</option></term>
+ <listitem><para>Force yes; this is a dangerous option that will cause apt to continue
+ without prompting if it is removing essentials. It
+ should not be used except in very special situations. Using
+ it can potentially destroy your system!
+ Configuration Item: <literal>APT::Get::allow-remove-essential</literal>. Introduced in APT 1.1.</para></listitem>
+ </varlistentry>
+
+ <varlistentry><term><option>--allow-change-held-packages</option></term>
+ <listitem><para>Force yes; this is a dangerous option that will cause apt to continue
+ without prompting if it is changing held packages. It
+ should not be used except in very special situations. Using
+ it can potentially destroy your system!
+ Configuration Item: <literal>APT::Get::allow-change-held-packages</literal>. Introduced in APT 1.1.</para></listitem>
+ </varlistentry>
+
<varlistentry><term><option>--force-yes</option></term>
<listitem><para>Force yes; this is a dangerous option that will cause apt to continue
without prompting if it is doing something potentially harmful. It
should not be used except in very special situations. Using
<literal>force-yes</literal> can potentially destroy your system!
- Configuration Item: <literal>APT::Get::force-yes</literal>.</para></listitem>
+ Configuration Item: <literal>APT::Get::force-yes</literal>. This is deprecated and replaced by <option>--allow-downgrades</option>, <option>--allow-remove-essential</option>, <option>--allow-change-held-packages</option> in 1.1. </para></listitem>
</varlistentry>
<varlistentry><term><option>--print-uris</option></term>
</varlistentry>
<varlistentry><term><option>--allow-unauthenticated</option></term>
- <listitem><para>Ignore if packages can't be authenticated and don't prompt about it.
- This is useful for tools like pbuilder.
- Configuration Item: <literal>APT::Get::AllowUnauthenticated</literal>.</para></listitem>
+ <listitem><para>Ignore if packages can't be authenticated and don't prompt
+ about it. This can be useful while working with local repositories,
+ but is a huge security risk if data authenticity isn't ensured in
+ another way by the user itself. The usage of the
+ <option>Trusted</option> option for &sources-list; entries should
+ usually be preferred over this global override. Configuration Item:
+ <literal>APT::Get::AllowUnauthenticated</literal>.</para></listitem>
</varlistentry>
<varlistentry><term><option>--no-allow-insecure-repositories</option></term>
<listitem><para>Forbid the update command to acquire unverifiable
- data from configured sources. Apt will fail at the update command
- for repositories without valid cryptographically signatures.
+ data from configured sources. APT will fail at the update command
+ for repositories without valid cryptographically signatures. See
+ also &apt-secure; for details on the concept and the implications.
Configuration Item: <literal>Acquire::AllowInsecureRepositories</literal>.</para></listitem>
</varlistentry>
projects / apt.git / blobdiff