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<?xml version="1.0" encoding="utf-8" standalone="no"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % aptent SYSTEM "apt.ent">
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<!ENTITY % aptverbatiment SYSTEM "apt-verbatim.ent">
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<!-- The last update date -->
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<date>2013-11-25T00:00:00Z</date>
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<refentrytitle>apt</refentrytitle>
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<manvolnum>8</manvolnum>
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<refmiscinfo class="manual">APT</refmiscinfo>
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<!-- Man page title -->
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<refname>apt</refname>
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<refpurpose>command-line interface</refpurpose>
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&synopsis-command-apt;
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<refsect1><title>Description</title>
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<para><command>apt</command> (Advanced Package Tool) is the
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command-line tool for handling packages. It provides a commandline
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interface for the package management of the system.
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See also &apt-get; and &apt-cache; for more low-level command options.
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<varlistentry><term><option>list</option></term>
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<listitem><para><literal>list</literal> is used to
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display a list of packages. It supports shell pattern for matching
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package names and the following options:
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<option>--installed</option>,
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<option>--upgradable</option>,
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<option>--all-versions</option>
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<varlistentry><term><option>search</option></term>
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<listitem><para><literal>search</literal> searches for the given
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term(s) and display matching packages.
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<varlistentry><term><option>show</option></term>
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<listitem><para><literal>show</literal> shows the package information
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for the given package(s).
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<varlistentry><term><option>install</option></term>
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<para><literal>install</literal> is followed by one or more
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package names desired for installation or upgrading.
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<para>A specific version of a package can be selected for installation by
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following the package name with an equals and the version of the package
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to select. This will cause that version to be located and selected for
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install. Alternatively a specific distribution can be selected by
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following the package name with a slash and the version of the
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distribution or the Archive name (stable, testing, unstable).</para>
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<varlistentry><term><option>remove</option></term>
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<listitem><para><literal>remove</literal> is identical to <literal>install</literal> except that packages are
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removed instead of installed. Note that removing a package leaves its
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configuration files on the system. If a plus sign is appended to the package
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name (with no intervening space), the identified package will be
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installed instead of removed.</para></listitem>
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<varlistentry><term><option>edit-sources</option></term>
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<listitem><para><literal>edit-sources</literal> lets you edit
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your sources.list file and provides basic sanity checks.
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<varlistentry><term><option>update</option></term>
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<listitem><para><literal>update</literal> is used to
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resynchronize the package index files from their sources.
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<varlistentry><term><option>upgrade</option></term>
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<listitem><para><literal>upgrade</literal> is used to install the
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newest versions of all packages currently installed on the system
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from the sources enumerated in
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<filename>/etc/apt/sources.list</filename>. New package will be
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installed, but existing package will never removed.
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<varlistentry><term><option>full-upgrade</option></term>
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<listitem><para><literal>full-upgrade</literal> performs the
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function of upgrade but may also remove installed packages
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if that is required in order to resolve a package conflict.
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<refsect1><title>options</title>
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<refsect1><title>Script usage</title>
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The &apt; commandline is designed as a end-user tool and it may
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change the output between versions. While it tries to not break
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backward compatibility there is no guarantee for it either.
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All features of &apt; are available in &apt-cache; and &apt-get;
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via APT options. Please prefer using these commands in your scripts.
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<refsect1><title>Differences to &apt-get;</title>
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<para>The <command>apt</command> command is meant to be pleasant for
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end users and does not need to be backward compatible like
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&apt-get;. Therefore some options are different:
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<para>The option <literal>DPkgPM::Progress-Fancy</literal> is enabled.
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<para>The option <literal>APT::Color</literal> is enabled.
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<para>A new <literal>list</literal> command is available
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similar to <literal>dpkg --list</literal>.
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<para>The option <literal>upgrade</literal> has
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<literal>--with-new-pkgs</literal> enabled by default.
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<refsect1><title>See Also</title>
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<para>&apt-get;, &apt-cache;, &sources-list;,
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&apt-conf;, &apt-config;,
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The APT User's guide in &guidesdir;, &apt-preferences;, the APT Howto.</para>
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<refsect1><title>Diagnostics</title>
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<para><command>apt</command> returns zero on normal operation, decimal 100 on error.</para>
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doc/apt.8.xml
