doc/apt-get.8.xml

   1 <?xml version="1.0" encoding="utf-8" standalone="no"?>
   2 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
   3   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
   4
   5 <!ENTITY % aptent SYSTEM "apt.ent">
   6 %aptent;
   7
   8 ]>
   9
  10 <refentry>
  11
  12  <refentryinfo>
  13    &apt-author.jgunthorpe;
  14    &apt-author.team;
  15    &apt-email;
  16    &apt-product;
  17    <!-- The last update date -->
  18    <date>08 November 2008</date>
  19  </refentryinfo>
  20
  21  <refmeta>
  22    <refentrytitle>apt-get</refentrytitle>
  23    <manvolnum>8</manvolnum>
  24    <refmiscinfo class="manual">APT</refmiscinfo>
  25  </refmeta>
  26
  27  <!-- Man page title -->
  28  <refnamediv>
  29     <refname>apt-get</refname>
  30     <refpurpose>APT package handling utility -- command-line interface</refpurpose>
  31  </refnamediv>
  32
  33  <!-- Arguments -->
  34  <refsynopsisdiv>
  35    <cmdsynopsis>
  36       <command>apt-get</command>
  37       <arg><option>-sqdyfmubV</option></arg>
  38       <arg>
  39               <option>-o=
  40                           <replaceable>config_string</replaceable>
  41               </option>
  42       </arg>
  43       <arg>
  44               <option>-c=
  45                       <replaceable>config_file</replaceable>
  46               </option>
  47       </arg>
  48       <arg>
  49                 <option>-t=</option>
  50                 <arg choice='plain'>
  51                         <replaceable>target_release</replaceable>
  52                 </arg>
  53       </arg>
  54
  55       <group choice="req">
  56          <arg choice='plain'>update</arg>
  57          <arg choice='plain'>upgrade</arg>
  58          <arg choice='plain'>dselect-upgrade</arg>
  59          <arg choice='plain'>dist-upgrade</arg>
  60          <arg choice='plain'>install
  61                          <arg choice="plain" rep="repeat"><replaceable>pkg</replaceable>
  62                                 <arg>
  63                                         <group choice='req'>
  64                                                 <arg choice='plain'>
  65                                                         =<replaceable>pkg_version_number</replaceable>
  66                                                 </arg>
  67                                                 <arg choice='plain'>
  68                                                         /<replaceable>target_release</replaceable>
  69                                                 </arg>
  70                                         </group>
  71                                 </arg>
  72                          </arg>
  73              </arg>
  74          <arg choice='plain'>remove <arg choice="plain" rep="repeat"><replaceable>pkg</replaceable></arg></arg>
  75          <arg choice='plain'>purge <arg choice="plain" rep="repeat"><replaceable>pkg</replaceable></arg></arg>
  76          <arg choice='plain'>source
  77                          <arg choice="plain" rep="repeat"><replaceable>pkg</replaceable>
  78                                 <arg>
  79                                         <group choice='req'>
  80                                                 <arg choice='plain'>
  81                                                         =<replaceable>pkg_version_number</replaceable>
  82                                                 </arg>
  83                                                 <arg choice='plain'>
  84                                                         /<replaceable>target_release</replaceable>
  85                                                 </arg>
  86                                         </group>
  87                                 </arg>
  88                          </arg>
  89              </arg>
  90          <arg choice='plain'>build-dep <arg choice="plain" rep="repeat"><replaceable>pkg</replaceable></arg></arg>
  91          <arg choice='plain'>check</arg>
  92          <arg choice='plain'>clean</arg>
  93          <arg choice='plain'>autoclean</arg>
  94          <arg choice='plain'>autoremove</arg>
  95                  <arg choice='plain'>
  96                          <group choice='req'>
  97                                 <arg choice='plain'>-v</arg>
  98                                 <arg choice='plain'>--version</arg>
  99                          </group>
 100                  </arg>
 101                  <arg choice='plain'>
 102                          <group choice='req'>
 103                                 <arg choice='plain'>-h</arg>
 104                                 <arg choice='plain'>--help</arg>
 105                          </group>
 106                  </arg>
 107       </group>
 108    </cmdsynopsis>
 109  </refsynopsisdiv>
 110
 111  <refsect1><title>Description</title>
 112    <para><command>apt-get</command> is the command-line tool for handling packages, and may be
 113    considered the user's "back-end" to other tools using the APT
 114    library.  Several "front-end" interfaces exist, such as &dselect;,
 115    &aptitude;, &synaptic; and &wajig;.</para>
 116
 117    <para>Unless the <option>-h</option>, or <option>--help</option> option is given, one of the
 118    commands below must be present.</para>
 119
 120    <variablelist>
 121      <varlistentry><term>update</term>
 122      <listitem><para><literal>update</literal> is used to resynchronize the package index files from
 123      their sources. The indexes of available packages are fetched from the
 124      location(s) specified in <filename>/etc/apt/sources.list</filename>.
 125      For example, when using a Debian archive, this command retrieves and
 126      scans the <filename>Packages.gz</filename> files, so that information about new
 127      and updated packages is available. An <literal>update</literal> should always be
 128      performed before an <literal>upgrade</literal> or <literal>dist-upgrade</literal>. Please
 129      be aware that the overall progress meter will be incorrect as the size
 130      of the package files cannot be known in advance.</para></listitem>
 131      </varlistentry>
 132
 133      <varlistentry><term>upgrade</term>
 134      <listitem><para><literal>upgrade</literal> is used to install the newest versions of all packages
 135      currently installed on the system from the sources enumerated in
 136      <filename>/etc/apt/sources.list</filename>. Packages currently installed with
 137      new versions available are retrieved and upgraded; under no circumstances
 138      are currently installed packages removed, or packages not already installed
 139      retrieved and installed. New versions of currently installed packages that
 140      cannot be upgraded without changing the install status of another package
 141      will be left at their current version. An <literal>update</literal> must be
 142      performed first so that <command>apt-get</command> knows that new versions of packages are
 143      available.</para></listitem>
 144      </varlistentry>
 145
 146      <varlistentry><term>dselect-upgrade</term>
 147      <listitem><para><literal>dselect-upgrade</literal>
 148      is used in conjunction with the traditional Debian packaging
 149      front-end, &dselect;. <literal>dselect-upgrade</literal>
 150      follows the changes made by &dselect; to the <literal>Status</literal>
 151      field of available packages, and performs the actions necessary to realize
 152      that state (for instance, the removal of old and the installation of new
 153      packages).</para></listitem>
 154      </varlistentry>
 155
 156      <varlistentry><term>dist-upgrade</term>
 157      <listitem><para><literal>dist-upgrade</literal> in addition to performing the function of
 158      <literal>upgrade</literal>, also intelligently handles changing dependencies
 159      with new versions of packages; <command>apt-get</command> has a "smart" conflict
 160      resolution system, and it will attempt to upgrade the most important
 161      packages at the expense of less important ones if necessary.
 162          So, <literal>dist-upgrade</literal> command may remove some packages.
 163      The <filename>/etc/apt/sources.list</filename> file contains a list of locations
 164      from which to retrieve desired package files.
 165      See also &apt-preferences; for a mechanism for
 166      overriding the general settings for individual packages.</para></listitem>
 167      </varlistentry>
 168
 169      <varlistentry><term>install</term>
 170      <listitem>
 171          <para><literal>install</literal> is followed by one or more
 172          packages desired for installation or upgrading.
 173          Each package is a package name, not a fully qualified
 174          filename (for instance, in a Debian GNU/Linux system,
 175          libc6 would be the argument provided, not
 176          <literal>libc6_1.9.6-2.deb</literal>). All packages required
 177          by the package(s) specified for installation will also
 178          be retrieved and installed.
 179          The <filename>/etc/apt/sources.list</filename> file is
 180          used to locate the desired packages. If a hyphen is
 181          appended to the package name (with no intervening space),
 182          the identified package will be removed if it is installed.
 183          Similarly a plus sign can be used to designate a
 184          package to install. These latter features may be used
 185          to override decisions made by apt-get's conflict
 186          resolution system.
 187          </para>
 188
 189      <para>A specific version of a package can be selected for installation by
 190      following the package name with an equals and the version of the package
 191      to select. This will cause that version to be located and selected for
 192      install. Alternatively a specific distribution can be selected by
 193      following the package name with a slash and the version of the
 194      distribution or the Archive name (stable, testing, unstable).</para>
 195
 196      <para>Both of the version selection mechanisms can downgrade packages and must
 197      be used with care.</para>
 198
 199         <para>This is also the target to use if you want to upgrade one or
 200                 more already-installed packages without upgrading every package
 201                 you have on your system. Unlike the "upgrade" target, which
 202                 installs the newest version of all currently installed packages,
 203                 "install" will install the newest version of only the package(s)
 204                 specified. Simply provide the name of the package(s) you wish
 205                 to upgrade, and if a newer version is available, it (and its
 206                 dependencies, as described above) will be downloaded and
 207                 installed.
 208         </para>
 209
 210      <para>Finally, the &apt-preferences; mechanism allows you to
 211      create an alternative installation policy for
 212      individual packages.</para>
 213
 214      <para>If no package matches the given expression and the expression contains one
 215      of '.', '?' or '*' then it is assumed to be a POSIX regular expression,
 216      and it is applied
 217      to all package names in the database. Any matches are then installed (or
 218      removed). Note that matching is done by substring so 'lo.*' matches 'how-lo'
 219      and 'lowest'. If this is undesired, anchor the regular expression
 220      with a '^' or '$' character, or create a more specific regular expression.</para></listitem>
 221      </varlistentry>
 222
 223      <varlistentry><term>remove</term>
 224      <listitem><para><literal>remove</literal> is identical to <literal>install</literal> except that packages are
 225          removed instead of installed. Note the removing a package leaves its
 226          configuration files in system. If a plus sign is appended to the package
 227      name (with no intervening space), the identified package will be
 228      installed instead of removed.</para></listitem>
 229      </varlistentry>
 230
 231      <varlistentry><term>purge</term>
 232      <listitem><para><literal>purge</literal> is identical to <literal>remove</literal> except that packages are
 233      removed and purged (any configuration files are deleted too).</para></listitem>
 234      </varlistentry>
 235
 236      <varlistentry><term>source</term>
 237      <listitem><para><literal>source</literal> causes <command>apt-get</command> to fetch source packages. APT
 238      will examine the available packages to decide which source package to
 239      fetch. It will then find and download into the current directory the
 240      newest available version of that source package while respect the
 241      default release, set with the option <literal>APT::Default-Release</literal>,
 242      the <option>-t</option> option or per package with the
 243      <literal>pkg/release</literal> syntax, if possible.</para>
 244
 245      <para>Source packages are tracked separately
 246      from binary packages via <literal>deb-src</literal> type lines
 247      in the &sources-list; file. This means that you will need to add such a line
 248      for each repository you want to get sources from. If you don't do this
 249      you will properly get another (newer, older or none) source version than
 250      the one you have installed or could install.</para>
 251
 252      <para>If the <option>--compile</option> option is specified
 253      then the package will be compiled to a binary .deb using
 254      <command>dpkg-buildpackage</command>, if <option>--download-only</option>
 255      is specified then the source package will not be unpacked.</para>
 256
 257      <para>A specific source version can be retrieved by postfixing the source name
 258      with an equals and then the version to fetch, similar to the mechanism
 259      used for the package files. This enables exact matching of the source
 260      package name and version, implicitly enabling the
 261      <literal>APT::Get::Only-Source</literal> option.</para>
 262
 263      <para>Note that source packages are not tracked like binary packages, they
 264      exist only in the current directory and are similar to downloading source
 265      tar balls.</para></listitem>
 266      </varlistentry>
 267
 268      <varlistentry><term>build-dep</term>
 269      <listitem><para><literal>build-dep</literal> causes apt-get to install/remove packages in an
 270      attempt to satisfy the build dependencies for a source package.</para></listitem>
 271      </varlistentry>
 272
 273      <varlistentry><term>check</term>
 274      <listitem><para><literal>check</literal> is a diagnostic tool; it updates the package cache and checks
 275      for broken dependencies.</para></listitem>
 276      </varlistentry>
 277
 278      <varlistentry><term>clean</term>
 279      <listitem><para><literal>clean</literal> clears out the local repository of retrieved package
 280      files. It removes everything but the lock file from
 281      <filename>&cachedir;/archives/</filename> and
 282      <filename>&cachedir;/archives/partial/</filename>. When APT is used as a
 283      &dselect; method, <literal>clean</literal> is run automatically.
 284      Those who do not use dselect will likely want to run <literal>apt-get clean</literal>
 285      from time to time to free up disk space.</para></listitem>
 286      </varlistentry>
 287
 288      <varlistentry><term>autoclean</term>
 289      <listitem><para>Like <literal>clean</literal>, <literal>autoclean</literal> clears out the local
 290      repository of retrieved package files. The difference is that it only
 291      removes package files that can no longer be downloaded, and are largely
 292      useless. This allows a cache to be maintained over a long period without
 293      it growing out of control. The configuration option
 294      <literal>APT::Clean-Installed</literal> will prevent installed packages from being
 295      erased if it is set to off.</para></listitem>
 296      </varlistentry>
 297
 298      <varlistentry><term>autoremove</term>
 299      <listitem><para><literal>autoremove</literal> is used to remove packages that were automatically
 300      installed to satisfy dependencies for some package and that are no more needed.</para></listitem>
 301      </varlistentry>
 302    </variablelist>
 303  </refsect1>
 304
 305  <refsect1><title>options</title>
 306    &apt-cmdblurb;
 307
 308    <variablelist>
 309      <varlistentry><term><option>--no-install-recommends</option></term>
 310      <listitem><para>Do not consider recommended packages as a dependency for installing.
 311      Configuration Item: <literal>APT::Install-Recommends</literal>.</para></listitem>
 312      </varlistentry>
 313
 314      <varlistentry><term><option>-d</option></term><term><option>--download-only</option></term>
 315      <listitem><para>Download only; package files are only retrieved, not unpacked or installed.
 316      Configuration Item: <literal>APT::Get::Download-Only</literal>.</para></listitem>
 317      </varlistentry>
 318
 319      <varlistentry><term><option>-f</option></term><term><option>--fix-broken</option></term>
 320      <listitem><para>Fix; attempt to correct a system with broken dependencies in
 321      place. This option, when used with install/remove, can omit any packages
 322      to permit APT to deduce a likely solution. If packages are specified,
 323      these have to completely correct the problem. The option is sometimes necessary when
 324      running APT for the first time; APT itself does not allow broken package
 325      dependencies to exist on a system. It is possible that a system's
 326      dependency structure can be so corrupt as to require manual intervention
 327      (which usually means using &dselect; or <command>dpkg --remove</command> to eliminate some of
 328      the offending packages). Use of this option together with <option>-m</option> may produce an
 329      error in some situations.
 330      Configuration Item: <literal>APT::Get::Fix-Broken</literal>.</para></listitem>
 331      </varlistentry>
 332
 333      <varlistentry><term><option>-m</option></term><term><option>--ignore-missing</option></term>
 334      <term><option>--fix-missing</option></term>
 335      <listitem><para>Ignore missing packages; If packages cannot be retrieved or fail the
 336      integrity check after retrieval (corrupted package files), hold back
 337      those packages and handle the result. Use of this option together with
 338      <option>-f</option> may produce an error in some situations. If a package is
 339      selected for installation (particularly if it is mentioned on the
 340      command line) and it could not be downloaded then it will be silently
 341      held back.
 342      Configuration Item: <literal>APT::Get::Fix-Missing</literal>.</para></listitem>
 343      </varlistentry>
 344
 345      <varlistentry><term><option>--no-download</option></term>
 346      <listitem><para>Disables downloading of packages. This is best used with
 347      <option>--ignore-missing</option> to force APT to use only the .debs it has
 348      already downloaded.
 349      Configuration Item: <literal>APT::Get::Download</literal>.</para></listitem>
 350      </varlistentry>
 351
 352      <varlistentry><term><option>-q</option></term><term><option>--quiet</option></term>
 353      <listitem><para>Quiet; produces output suitable for logging, omitting progress indicators.
 354      More q's will produce more quiet up to a maximum of 2. You can also use
 355      <option>-q=#</option> to set the quiet level, overriding the configuration file.
 356      Note that quiet level 2 implies <option>-y</option>, you should never use -qq
 357      without a no-action modifier such as -d, --print-uris or -s as APT may
 358      decided to do something you did not expect.
 359      Configuration Item: <literal>quiet</literal>.</para></listitem>
 360      </varlistentry>
 361
 362      <varlistentry><term><option>-s</option></term>
 363                    <term><option>--simulate</option></term>
 364                    <term><option>--just-print</option></term>
 365                    <term><option>--dry-run</option></term>
 366                    <term><option>--recon</option></term>
 367                    <term><option>--no-act</option></term>
 368      <listitem><para>No action; perform a simulation of events that would occur but do not
 369      actually change the system.
 370      Configuration Item: <literal>APT::Get::Simulate</literal>.</para>
 371
 372      <para>Simulation run as user will deactivate locking (<literal>Debug::NoLocking</literal>)
 373      automatic. Also a notice will be displayed indicating that this is only a simulation,
 374      if the option <literal>APT::Get::Show-User-Simulation-Note</literal> is set (Default: true).
 375      Neither NoLocking nor the notice will be triggered if run as root (root should know what
 376      he is doing without further warnings by <literal>apt-get</literal>).</para>
 377
 378      <para>Simulate prints out
 379      a series of lines each one representing a dpkg operation, Configure (Conf),
 380      Remove (Remv), Unpack (Inst). Square brackets indicate broken packages
 381      and empty set of square brackets meaning breaks that are of no consequence
 382      (rare).</para></listitem>
 383      </varlistentry>
 384
 385      <varlistentry><term><option>-y</option></term><term><option>--yes</option></term>
 386                    <term><option>--assume-yes</option></term>
 387      <listitem><para>Automatic yes to prompts; assume "yes" as answer to all prompts and run
 388      non-interactively. If an undesirable situation, such as changing a held
 389      package, trying to install a unauthenticated package or removing an essential package
 390      occurs then <literal>apt-get</literal> will abort.
 391      Configuration Item: <literal>APT::Get::Assume-Yes</literal>.</para></listitem>
 392      </varlistentry>
 393
 394      <varlistentry><term><option>-u</option></term><term><option>--show-upgraded</option></term>
 395      <listitem><para>Show upgraded packages; Print out a list of all packages that are to be
 396      upgraded.
 397      Configuration Item: <literal>APT::Get::Show-Upgraded</literal>.</para></listitem>
 398      </varlistentry>
 399
 400      <varlistentry><term><option>-V</option></term><term><option>--verbose-versions</option></term>
 401      <listitem><para>Show full versions for upgraded and installed packages.
 402      Configuration Item: <literal>APT::Get::Show-Versions</literal>.</para></listitem>
 403      </varlistentry>
 404
 405      <varlistentry><term><option>-b</option></term><term><option>--compile</option></term>
 406                    <term><option>--build</option></term>
 407      <listitem><para>Compile source packages after downloading them.
 408      Configuration Item: <literal>APT::Get::Compile</literal>.</para></listitem>
 409      </varlistentry>
 410
 411      <varlistentry><term><option>--install-recommends</option></term>
 412      <listitem><para>Also install recommended packages.</para></listitem>
 413      </varlistentry>
 414
 415      <varlistentry><term><option>--no-install-recommends</option></term>
 416      <listitem><para>Do not install recommended packages.</para></listitem>
 417      </varlistentry>
 418
 419      <varlistentry><term><option>--ignore-hold</option></term>
 420      <listitem><para>Ignore package Holds; This causes <command>apt-get</command> to ignore a hold
 421      placed on a package. This may be useful in conjunction with
 422      <literal>dist-upgrade</literal> to override a large number of undesired holds.
 423      Configuration Item: <literal>APT::Ignore-Hold</literal>.</para></listitem>
 424      </varlistentry>
 425
 426      <varlistentry><term><option>--no-upgrade</option></term>
 427      <listitem><para>Do not upgrade packages; When used in conjunction with <literal>install</literal>,
 428      <literal>no-upgrade</literal> will prevent packages on the command line
 429      from being upgraded if they are already installed.
 430      Configuration Item: <literal>APT::Get::Upgrade</literal>.</para></listitem>
 431      </varlistentry>
 432
 433      <varlistentry><term><option>--only-upgrade</option></term>
 434      <listitem><para>Do not install new packages; When used in conjunction with <literal>install</literal>,
 435      <literal>only-upgrade</literal> will prevent packages on the command line
 436      from being upgraded if they are not already installed.
 437      Configuration Item: <literal>APT::Get::Only-Upgrade</literal>.</para></listitem>
 438      </varlistentry>
 439
 440      <varlistentry><term><option>--force-yes</option></term>
 441      <listitem><para>Force yes; This is a dangerous option that will cause apt to continue
 442      without prompting if it is doing something potentially harmful. It
 443      should not be used except in very special situations. Using
 444      <literal>force-yes</literal> can potentially destroy your system!
 445      Configuration Item: <literal>APT::Get::force-yes</literal>.</para></listitem>
 446      </varlistentry>
 447
 448      <varlistentry><term><option>--print-uris</option></term>
 449      <listitem><para>Instead of fetching the files to install their URIs are printed. Each
 450      URI will have the path, the destination file name, the size and the expected
 451      md5 hash. Note that the file name to write to will not always match
 452      the file name on the remote site! This also works with the
 453      <literal>source</literal> and <literal>update</literal> commands. When used with the
 454      <literal>update</literal> command the MD5 and size are not included, and it is
 455      up to the user to decompress any compressed files.
 456      Configuration Item: <literal>APT::Get::Print-URIs</literal>.</para></listitem>
 457      </varlistentry>
 458
 459      <varlistentry><term><option>--purge</option></term>
 460      <listitem><para>Use purge instead of remove for anything that would be removed.
 461      An asterisk ("*") will be displayed next to packages which are
 462          scheduled to be purged. <option>remove --purge</option> is equivalent to the
 463          <option>purge</option> command.
 464      Configuration Item: <literal>APT::Get::Purge</literal>.</para></listitem>
 465      </varlistentry>
 466
 467      <varlistentry><term><option>--reinstall</option></term>
 468      <listitem><para>Re-Install packages that are already installed and at the newest version.
 469      Configuration Item: <literal>APT::Get::ReInstall</literal>.</para></listitem>
 470      </varlistentry>
 471
 472      <varlistentry><term><option>--list-cleanup</option></term>
 473      <listitem><para>This option defaults to on, use <literal>--no-list-cleanup</literal> to turn it
 474      off. When on <command>apt-get</command> will automatically manage the contents of
 475      <filename>&statedir;/lists</filename> to ensure that obsolete files are erased.
 476      The only  reason to turn it off is if you frequently change your source
 477      list.
 478      Configuration Item: <literal>APT::Get::List-Cleanup</literal>.</para></listitem>
 479      </varlistentry>
 480
 481      <varlistentry><term><option>-t</option></term>
 482                    <term><option>--target-release</option></term>
 483                    <term><option>--default-release</option></term>
 484      <listitem><para>This option controls the default input to the policy engine, it creates
 485      a default pin at priority 990 using the specified release string.
 486      This overrides the general settings in <filename>/etc/apt/preferences</filename>.
 487      Specifically pinned packages are not affected by the value
 488      of this option. In short, this option
 489      lets you have simple control over which distribution packages will be
 490      retrieved from. Some common examples might be
 491      <option>-t '2.1*'</option>, <option>-t unstable</option>
 492      or <option>-t sid</option>.
 493      Configuration Item: <literal>APT::Default-Release</literal>;
 494      see also the &apt-preferences; manual page.</para></listitem>
 495      </varlistentry>
 496
 497      <varlistentry><term><option>--trivial-only</option></term>
 498      <listitem><para>
 499      Only perform operations that are 'trivial'. Logically this can be considered
 500      related to <option>--assume-yes</option>, where <option>--assume-yes</option> will answer
 501      yes to any prompt, <option>--trivial-only</option> will answer no.
 502      Configuration Item: <literal>APT::Get::Trivial-Only</literal>.</para></listitem>
 503      </varlistentry>
 504
 505      <varlistentry><term><option>--no-remove</option></term>
 506      <listitem><para>If any packages are to be removed apt-get immediately aborts without
 507      prompting.
 508      Configuration Item: <literal>APT::Get::Remove</literal>.</para></listitem>
 509      </varlistentry>
 510
 511      <varlistentry><term><option>--auto-remove</option></term>
 512      <listitem><para>If the command is either <literal>install</literal> or <literal>remove</literal>,
 513      then this option acts like running <literal>autoremove</literal> command, removing the unused
 514      dependency packages. Configuration Item: <literal>APT::Get::AutomaticRemove</literal>.
 515      </para></listitem>
 516      </varlistentry>
 517
 518      <varlistentry><term><option>--only-source</option></term>
 519      <listitem><para>Only has meaning for the
 520      <literal>source</literal> and <literal>build-dep</literal>
 521      commands.  Indicates that the given source names are not to be
 522      mapped through the binary table.  This means that if this option
 523      is specified, these commands will only accept source package
 524      names as arguments, rather than accepting binary package names
 525      and looking up the corresponding source package.  Configuration
 526      Item: <literal>APT::Get::Only-Source</literal>.</para></listitem>
 527      </varlistentry>
 528
 529      <varlistentry><term><option>--diff-only</option></term><term><option>--dsc-only</option></term><term><option>--tar-only</option></term>
 530      <listitem><para>Download only the diff, dsc, or tar file of a source archive.
 531      Configuration Item: <literal>APT::Get::Diff-Only</literal>, <literal>APT::Get::Dsc-Only</literal>, and
 532      <literal>APT::Get::Tar-Only</literal>.</para></listitem>
 533      </varlistentry>
 534
 535      <varlistentry><term><option>--arch-only</option></term>
 536      <listitem><para>Only process architecture-dependent build-dependencies.
 537      Configuration Item: <literal>APT::Get::Arch-Only</literal>.</para></listitem>
 538      </varlistentry>
 539
 540      <varlistentry><term><option>--allow-unauthenticated</option></term>
 541      <listitem><para>Ignore if packages can't be authenticated and don't prompt about it.
 542      This is useful for tools like pbuilder.
 543      Configuration Item: <literal>APT::Get::AllowUnauthenticated</literal>.</para></listitem>
 544      </varlistentry>
 545
 546
 547      &apt-commonoptions;
 548
 549    </variablelist>
 550  </refsect1>
 551
 552  <refsect1><title>Files</title>
 553    <variablelist>
 554      &file-sourceslist;
 555      &file-aptconf;
 556      &file-preferences;
 557      &file-cachearchives;
 558      &file-statelists;
 559    </variablelist>
 560  </refsect1>
 561
 562  <refsect1><title>See Also</title>
 563    <para>&apt-cache;, &apt-cdrom;, &dpkg;, &dselect;, &sources-list;,
 564    &apt-conf;, &apt-config;, &apt-secure;,
 565    The APT User's guide in &guidesdir;, &apt-preferences;, the APT Howto.</para>
 566  </refsect1>
 567
 568  <refsect1><title>Diagnostics</title>
 569    <para><command>apt-get</command> returns zero on normal operation, decimal 100 on error.</para>
 570  </refsect1>
 571  <refsect1>
 572          <title>ORIGINAL AUTHORS</title>
 573          <para>&apt-author.jgunthorpe;</para>
 574  </refsect1>
 575  <refsect1>
 576          <title>CURRENT AUTHORS</title>
 577          <para>
 578                  &apt-author.team;
 579          </para>
 580                  &apt-qapage;
 581  </refsect1>
 582  &manbugs;
 583 </refentry>