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[ntk/apt.git] / doc / apt-get.8.xml
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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
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8<!ENTITY % aptverbatiment SYSTEM "apt-verbatim.ent">
9%aptverbatiment;
10
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11]>
12
13<refentry>
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14
15 <refentryinfo>
16 &apt-author.jgunthorpe;
17 &apt-author.team;
18 &apt-email;
19 &apt-product;
20 <!-- The last update date -->
2f0b4b14 21 <date>08 November 2008</date>
5e80de29 22 </refentryinfo>
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23
24 <refmeta>
25 <refentrytitle>apt-get</refentrytitle>
26 <manvolnum>8</manvolnum>
f0599b9c 27 <refmiscinfo class="manual">APT</refmiscinfo>
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28 </refmeta>
29
30 <!-- Man page title -->
31 <refnamediv>
32 <refname>apt-get</refname>
33 <refpurpose>APT package handling utility -- command-line interface</refpurpose>
34 </refnamediv>
35
36 <!-- Arguments -->
37 <refsynopsisdiv>
38 <cmdsynopsis>
39 <command>apt-get</command>
2f0b4b14 40 <arg><option>-sqdyfmubV</option></arg>
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41 <arg>
42 <option>-o=
4a09fd30 43 <replaceable>config_string</replaceable>
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44 </option>
45 </arg>
46 <arg>
47 <option>-c=
48 <replaceable>config_file</replaceable>
49 </option>
50 </arg>
51 <arg>
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52 <option>-t=</option>
53 <arg choice='plain'>
54 <replaceable>target_release</replaceable>
55 </arg>
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56 </arg>
57
24f6490f 58 <group choice="req">
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59 <arg choice='plain'>update</arg>
60 <arg choice='plain'>upgrade</arg>
61 <arg choice='plain'>dselect-upgrade</arg>
2a7f6e97 62 <arg choice='plain'>dist-upgrade</arg>
c74e6100 63 <arg choice='plain'>install
ef48e3ae 64 <arg choice="plain" rep="repeat"><replaceable>pkg</replaceable>
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65 <arg>
66 <group choice='req'>
67 <arg choice='plain'>
68 =<replaceable>pkg_version_number</replaceable>
69 </arg>
70 <arg choice='plain'>
4fd5ef42 71 /<replaceable>target_release</replaceable>
efc487fb 72 </arg>
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73 </group>
74 </arg>
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75 </arg>
76 </arg>
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77 <arg choice='plain'>remove <arg choice="plain" rep="repeat"><replaceable>pkg</replaceable></arg></arg>
78 <arg choice='plain'>purge <arg choice="plain" rep="repeat"><replaceable>pkg</replaceable></arg></arg>
79 <arg choice='plain'>source
ef48e3ae 80 <arg choice="plain" rep="repeat"><replaceable>pkg</replaceable>
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81 <arg>
82 <group choice='req'>
83 <arg choice='plain'>
84 =<replaceable>pkg_version_number</replaceable>
85 </arg>
86 <arg choice='plain'>
4fd5ef42 87 /<replaceable>target_release</replaceable>
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88 </arg>
89 </group>
90 </arg>
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91 </arg>
92 </arg>
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93 <arg choice='plain'>build-dep <arg choice="plain" rep="repeat"><replaceable>pkg</replaceable></arg></arg>
94 <arg choice='plain'>check</arg>
95 <arg choice='plain'>clean</arg>
96 <arg choice='plain'>autoclean</arg>
97 <arg choice='plain'>autoremove</arg>
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98 <arg choice='plain'>
99 <group choice='req'>
100 <arg choice='plain'>-v</arg>
101 <arg choice='plain'>--version</arg>
102 </group>
103 </arg>
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104 <arg choice='plain'>
105 <group choice='req'>
106 <arg choice='plain'>-h</arg>
107 <arg choice='plain'>--help</arg>
108 </group>
109 </arg>
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110 </group>
111 </cmdsynopsis>
112 </refsynopsisdiv>
113
114 <refsect1><title>Description</title>
115 <para><command>apt-get</command> is the command-line tool for handling packages, and may be
116 considered the user's "back-end" to other tools using the APT
007aba92 117 library. Several "front-end" interfaces exist, such as &dselect;,
9233ef0d 118 &aptitude;, &synaptic; and &wajig;.</para>
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119
120 <para>Unless the <option>-h</option>, or <option>--help</option> option is given, one of the
121 commands below must be present.</para>
122
123 <variablelist>
124 <varlistentry><term>update</term>
125 <listitem><para><literal>update</literal> is used to resynchronize the package index files from
126 their sources. The indexes of available packages are fetched from the
127 location(s) specified in <filename>/etc/apt/sources.list</filename>.
128 For example, when using a Debian archive, this command retrieves and
129 scans the <filename>Packages.gz</filename> files, so that information about new
130 and updated packages is available. An <literal>update</literal> should always be
131 performed before an <literal>upgrade</literal> or <literal>dist-upgrade</literal>. Please
132 be aware that the overall progress meter will be incorrect as the size
133 of the package files cannot be known in advance.</para></listitem>
134 </varlistentry>
135
136 <varlistentry><term>upgrade</term>
137 <listitem><para><literal>upgrade</literal> is used to install the newest versions of all packages
138 currently installed on the system from the sources enumerated in
139 <filename>/etc/apt/sources.list</filename>. Packages currently installed with
140 new versions available are retrieved and upgraded; under no circumstances
141 are currently installed packages removed, or packages not already installed
142 retrieved and installed. New versions of currently installed packages that
143 cannot be upgraded without changing the install status of another package
144 will be left at their current version. An <literal>update</literal> must be
145 performed first so that <command>apt-get</command> knows that new versions of packages are
146 available.</para></listitem>
147 </varlistentry>
148
149 <varlistentry><term>dselect-upgrade</term>
150 <listitem><para><literal>dselect-upgrade</literal>
151 is used in conjunction with the traditional Debian packaging
152 front-end, &dselect;. <literal>dselect-upgrade</literal>
153 follows the changes made by &dselect; to the <literal>Status</literal>
154 field of available packages, and performs the actions necessary to realize
155 that state (for instance, the removal of old and the installation of new
156 packages).</para></listitem>
157 </varlistentry>
158
159 <varlistentry><term>dist-upgrade</term>
160 <listitem><para><literal>dist-upgrade</literal> in addition to performing the function of
161 <literal>upgrade</literal>, also intelligently handles changing dependencies
162 with new versions of packages; <command>apt-get</command> has a "smart" conflict
163 resolution system, and it will attempt to upgrade the most important
164 packages at the expense of less important ones if necessary.
087a772e 165 So, <literal>dist-upgrade</literal> command may remove some packages.
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166 The <filename>/etc/apt/sources.list</filename> file contains a list of locations
167 from which to retrieve desired package files.
168 See also &apt-preferences; for a mechanism for
169 overriding the general settings for individual packages.</para></listitem>
170 </varlistentry>
171
172 <varlistentry><term>install</term>
2b0de496 173 <listitem>
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174 <para><literal>install</literal> is followed by one or more
175 packages desired for installation or upgrading.
176 Each package is a package name, not a fully qualified
177 filename (for instance, in a Debian GNU/Linux system,
178 libc6 would be the argument provided, not
179 <literal>libc6_1.9.6-2.deb</literal>). All packages required
180 by the package(s) specified for installation will also
181 be retrieved and installed.
182 The <filename>/etc/apt/sources.list</filename> file is
183 used to locate the desired packages. If a hyphen is
184 appended to the package name (with no intervening space),
185 the identified package will be removed if it is installed.
186 Similarly a plus sign can be used to designate a
187 package to install. These latter features may be used
188 to override decisions made by apt-get's conflict
189 resolution system.
190 </para>
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191
192 <para>A specific version of a package can be selected for installation by
193 following the package name with an equals and the version of the package
194 to select. This will cause that version to be located and selected for
195 install. Alternatively a specific distribution can be selected by
196 following the package name with a slash and the version of the
197 distribution or the Archive name (stable, testing, unstable).</para>
198
199 <para>Both of the version selection mechanisms can downgrade packages and must
200 be used with care.</para>
201
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202 <para>This is also the target to use if you want to upgrade one or
203 more already-installed packages without upgrading every package
204 you have on your system. Unlike the "upgrade" target, which
205 installs the newest version of all currently installed packages,
206 "install" will install the newest version of only the package(s)
207 specified. Simply provide the name of the package(s) you wish
208 to upgrade, and if a newer version is available, it (and its
209 dependencies, as described above) will be downloaded and
210 installed.
211 </para>
212
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213 <para>Finally, the &apt-preferences; mechanism allows you to
214 create an alternative installation policy for
215 individual packages.</para>
216
217 <para>If no package matches the given expression and the expression contains one
218 of '.', '?' or '*' then it is assumed to be a POSIX regular expression,
219 and it is applied
220 to all package names in the database. Any matches are then installed (or
221 removed). Note that matching is done by substring so 'lo.*' matches 'how-lo'
222 and 'lowest'. If this is undesired, anchor the regular expression
223 with a '^' or '$' character, or create a more specific regular expression.</para></listitem>
224 </varlistentry>
225
226 <varlistentry><term>remove</term>
227 <listitem><para><literal>remove</literal> is identical to <literal>install</literal> except that packages are
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228 removed instead of installed. Note the removing a package leaves its
229 configuration files in system. If a plus sign is appended to the package
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230 name (with no intervening space), the identified package will be
231 installed instead of removed.</para></listitem>
232 </varlistentry>
233
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234 <varlistentry><term>purge</term>
235 <listitem><para><literal>purge</literal> is identical to <literal>remove</literal> except that packages are
861aa1bd 236 removed and purged (any configuration files are deleted too).</para></listitem>
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237 </varlistentry>
238
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239 <varlistentry><term>source</term>
240 <listitem><para><literal>source</literal> causes <command>apt-get</command> to fetch source packages. APT
241 will examine the available packages to decide which source package to
242 fetch. It will then find and download into the current directory the
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243 newest available version of that source package while respect the
244 default release, set with the option <literal>APT::Default-Release</literal>,
7fa2e810 245 the <option>-t</option> option or per package with the
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246 <literal>pkg/release</literal> syntax, if possible.</para>
247
248 <para>Source packages are tracked separately
249 from binary packages via <literal>deb-src</literal> type lines
250 in the &sources-list; file. This means that you will need to add such a line
251 for each repository you want to get sources from. If you don't do this
252 you will properly get another (newer, older or none) source version than
253 the one you have installed or could install.</para>
254
5f4331c4 255 <para>If the <option>--compile</option> option is specified
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256 then the package will be compiled to a binary .deb using
257 <command>dpkg-buildpackage</command>, if <option>--download-only</option>
258 is specified then the source package will not be unpacked.</para>
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259
260 <para>A specific source version can be retrieved by postfixing the source name
261 with an equals and then the version to fetch, similar to the mechanism
262 used for the package files. This enables exact matching of the source
263 package name and version, implicitly enabling the
264 <literal>APT::Get::Only-Source</literal> option.</para>
265
266 <para>Note that source packages are not tracked like binary packages, they
267 exist only in the current directory and are similar to downloading source
268 tar balls.</para></listitem>
269 </varlistentry>
270
271 <varlistentry><term>build-dep</term>
272 <listitem><para><literal>build-dep</literal> causes apt-get to install/remove packages in an
273 attempt to satisfy the build dependencies for a source package.</para></listitem>
274 </varlistentry>
275
276 <varlistentry><term>check</term>
277 <listitem><para><literal>check</literal> is a diagnostic tool; it updates the package cache and checks
278 for broken dependencies.</para></listitem>
279 </varlistentry>
280
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281 <varlistentry><term>download</term>
282 <listitem><para><literal>download</literal> will download the given
283 binary package into the current directoy.
284 </para></listitem>
285 </varlistentry>
286
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287 <varlistentry><term>clean</term>
288 <listitem><para><literal>clean</literal> clears out the local repository of retrieved package
289 files. It removes everything but the lock file from
290 <filename>&cachedir;/archives/</filename> and
291 <filename>&cachedir;/archives/partial/</filename>. When APT is used as a
292 &dselect; method, <literal>clean</literal> is run automatically.
293 Those who do not use dselect will likely want to run <literal>apt-get clean</literal>
294 from time to time to free up disk space.</para></listitem>
295 </varlistentry>
296
297 <varlistentry><term>autoclean</term>
298 <listitem><para>Like <literal>clean</literal>, <literal>autoclean</literal> clears out the local
299 repository of retrieved package files. The difference is that it only
300 removes package files that can no longer be downloaded, and are largely
301 useless. This allows a cache to be maintained over a long period without
302 it growing out of control. The configuration option
303 <literal>APT::Clean-Installed</literal> will prevent installed packages from being
304 erased if it is set to off.</para></listitem>
305 </varlistentry>
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306
307 <varlistentry><term>autoremove</term>
308 <listitem><para><literal>autoremove</literal> is used to remove packages that were automatically
309 installed to satisfy dependencies for some package and that are no more needed.</para></listitem>
310 </varlistentry>
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311
312 <varlistentry><term>changelog</term>
313 <listitem><para><literal>changelog</literal> downloads a package changelog and displays
314 it through <command>sensible-pager</command>. The server name and base
315 directory is defined in the <literal>APT::Changelogs::Server</literal>
316 variable (e. g. <ulink>http://packages.debian.org/changelogs</ulink> for
317 Debian or <ulink>http://changelogs.ubuntu.com/changelogs</ulink> for
318 Ubuntu).
319 By default it displays the changelog for the version that is
320 installed. However, you can specify the same options as for
321 the <option>install</option> command.
322 </para>
323 </listitem>
324 </varlistentry>
325
326
327
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328 </variablelist>
329 </refsect1>
330
331 <refsect1><title>options</title>
332 &apt-cmdblurb;
333
334 <variablelist>
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335 <varlistentry><term><option>--no-install-recommends</option></term>
336 <listitem><para>Do not consider recommended packages as a dependency for installing.
337 Configuration Item: <literal>APT::Install-Recommends</literal>.</para></listitem>
338 </varlistentry>
339
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340 <varlistentry><term><option>-d</option></term><term><option>--download-only</option></term>
341 <listitem><para>Download only; package files are only retrieved, not unpacked or installed.
342 Configuration Item: <literal>APT::Get::Download-Only</literal>.</para></listitem>
343 </varlistentry>
344
345 <varlistentry><term><option>-f</option></term><term><option>--fix-broken</option></term>
346 <listitem><para>Fix; attempt to correct a system with broken dependencies in
347 place. This option, when used with install/remove, can omit any packages
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348 to permit APT to deduce a likely solution. If packages are specified,
349 these have to completely correct the problem. The option is sometimes necessary when
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350 running APT for the first time; APT itself does not allow broken package
351 dependencies to exist on a system. It is possible that a system's
352 dependency structure can be so corrupt as to require manual intervention
353 (which usually means using &dselect; or <command>dpkg --remove</command> to eliminate some of
354 the offending packages). Use of this option together with <option>-m</option> may produce an
355 error in some situations.
356 Configuration Item: <literal>APT::Get::Fix-Broken</literal>.</para></listitem>
357 </varlistentry>
358
359 <varlistentry><term><option>-m</option></term><term><option>--ignore-missing</option></term>
360 <term><option>--fix-missing</option></term>
361 <listitem><para>Ignore missing packages; If packages cannot be retrieved or fail the
362 integrity check after retrieval (corrupted package files), hold back
363 those packages and handle the result. Use of this option together with
364 <option>-f</option> may produce an error in some situations. If a package is
365 selected for installation (particularly if it is mentioned on the
366 command line) and it could not be downloaded then it will be silently
367 held back.
368 Configuration Item: <literal>APT::Get::Fix-Missing</literal>.</para></listitem>
369 </varlistentry>
370
371 <varlistentry><term><option>--no-download</option></term>
372 <listitem><para>Disables downloading of packages. This is best used with
373 <option>--ignore-missing</option> to force APT to use only the .debs it has
374 already downloaded.
375 Configuration Item: <literal>APT::Get::Download</literal>.</para></listitem>
376 </varlistentry>
377
378 <varlistentry><term><option>-q</option></term><term><option>--quiet</option></term>
379 <listitem><para>Quiet; produces output suitable for logging, omitting progress indicators.
380 More q's will produce more quiet up to a maximum of 2. You can also use
381 <option>-q=#</option> to set the quiet level, overriding the configuration file.
382 Note that quiet level 2 implies <option>-y</option>, you should never use -qq
383 without a no-action modifier such as -d, --print-uris or -s as APT may
384 decided to do something you did not expect.
385 Configuration Item: <literal>quiet</literal>.</para></listitem>
386 </varlistentry>
387
388 <varlistentry><term><option>-s</option></term>
389 <term><option>--simulate</option></term>
390 <term><option>--just-print</option></term>
391 <term><option>--dry-run</option></term>
392 <term><option>--recon</option></term>
393 <term><option>--no-act</option></term>
394 <listitem><para>No action; perform a simulation of events that would occur but do not
395 actually change the system.
396 Configuration Item: <literal>APT::Get::Simulate</literal>.</para>
397
55a5a46c 398 <para>Simulation run as user will deactivate locking (<literal>Debug::NoLocking</literal>)
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399 automatic. Also a notice will be displayed indicating that this is only a simulation,
400 if the option <literal>APT::Get::Show-User-Simulation-Note</literal> is set (Default: true).
401 Neither NoLocking nor the notice will be triggered if run as root (root should know what
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402 he is doing without further warnings by <literal>apt-get</literal>).</para>
403
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404 <para>Simulate prints out
405 a series of lines each one representing a dpkg operation, Configure (Conf),
5f4331c4 406 Remove (Remv), Unpack (Inst). Square brackets indicate broken packages
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407 and empty set of square brackets meaning breaks that are of no consequence
408 (rare).</para></listitem>
409 </varlistentry>
410
411 <varlistentry><term><option>-y</option></term><term><option>--yes</option></term>
412 <term><option>--assume-yes</option></term>
413 <listitem><para>Automatic yes to prompts; assume "yes" as answer to all prompts and run
414 non-interactively. If an undesirable situation, such as changing a held
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415 package, trying to install a unauthenticated package or removing an essential package
416 occurs then <literal>apt-get</literal> will abort.
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417 Configuration Item: <literal>APT::Get::Assume-Yes</literal>.</para></listitem>
418 </varlistentry>
419
420 <varlistentry><term><option>-u</option></term><term><option>--show-upgraded</option></term>
421 <listitem><para>Show upgraded packages; Print out a list of all packages that are to be
422 upgraded.
423 Configuration Item: <literal>APT::Get::Show-Upgraded</literal>.</para></listitem>
424 </varlistentry>
425
426 <varlistentry><term><option>-V</option></term><term><option>--verbose-versions</option></term>
427 <listitem><para>Show full versions for upgraded and installed packages.
428 Configuration Item: <literal>APT::Get::Show-Versions</literal>.</para></listitem>
429 </varlistentry>
430
431 <varlistentry><term><option>-b</option></term><term><option>--compile</option></term>
432 <term><option>--build</option></term>
433 <listitem><para>Compile source packages after downloading them.
434 Configuration Item: <literal>APT::Get::Compile</literal>.</para></listitem>
435 </varlistentry>
06d79436 436
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437 <varlistentry><term><option>--ignore-hold</option></term>
438 <listitem><para>Ignore package Holds; This causes <command>apt-get</command> to ignore a hold
439 placed on a package. This may be useful in conjunction with
440 <literal>dist-upgrade</literal> to override a large number of undesired holds.
441 Configuration Item: <literal>APT::Ignore-Hold</literal>.</para></listitem>
442 </varlistentry>
443
444 <varlistentry><term><option>--no-upgrade</option></term>
445 <listitem><para>Do not upgrade packages; When used in conjunction with <literal>install</literal>,
446 <literal>no-upgrade</literal> will prevent packages on the command line
447 from being upgraded if they are already installed.
448 Configuration Item: <literal>APT::Get::Upgrade</literal>.</para></listitem>
449 </varlistentry>
450
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451 <varlistentry><term><option>--only-upgrade</option></term>
452 <listitem><para>Do not install new packages; When used in conjunction with <literal>install</literal>,
453 <literal>only-upgrade</literal> will prevent packages on the command line
454 from being upgraded if they are not already installed.
455 Configuration Item: <literal>APT::Get::Only-Upgrade</literal>.</para></listitem>
456 </varlistentry>
457
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458 <varlistentry><term><option>--force-yes</option></term>
459 <listitem><para>Force yes; This is a dangerous option that will cause apt to continue
460 without prompting if it is doing something potentially harmful. It
461 should not be used except in very special situations. Using
462 <literal>force-yes</literal> can potentially destroy your system!
463 Configuration Item: <literal>APT::Get::force-yes</literal>.</para></listitem>
464 </varlistentry>
465
466 <varlistentry><term><option>--print-uris</option></term>
467 <listitem><para>Instead of fetching the files to install their URIs are printed. Each
468 URI will have the path, the destination file name, the size and the expected
469 md5 hash. Note that the file name to write to will not always match
470 the file name on the remote site! This also works with the
471 <literal>source</literal> and <literal>update</literal> commands. When used with the
472 <literal>update</literal> command the MD5 and size are not included, and it is
473 up to the user to decompress any compressed files.
474 Configuration Item: <literal>APT::Get::Print-URIs</literal>.</para></listitem>
475 </varlistentry>
476
477 <varlistentry><term><option>--purge</option></term>
478 <listitem><para>Use purge instead of remove for anything that would be removed.
479 An asterisk ("*") will be displayed next to packages which are
5d70f74c 480 scheduled to be purged. <option>remove --purge</option> is equivalent to the
861aa1bd 481 <option>purge</option> command.
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482 Configuration Item: <literal>APT::Get::Purge</literal>.</para></listitem>
483 </varlistentry>
484
485 <varlistentry><term><option>--reinstall</option></term>
486 <listitem><para>Re-Install packages that are already installed and at the newest version.
487 Configuration Item: <literal>APT::Get::ReInstall</literal>.</para></listitem>
488 </varlistentry>
489
490 <varlistentry><term><option>--list-cleanup</option></term>
491 <listitem><para>This option defaults to on, use <literal>--no-list-cleanup</literal> to turn it
492 off. When on <command>apt-get</command> will automatically manage the contents of
493 <filename>&statedir;/lists</filename> to ensure that obsolete files are erased.
494 The only reason to turn it off is if you frequently change your source
495 list.
496 Configuration Item: <literal>APT::Get::List-Cleanup</literal>.</para></listitem>
497 </varlistentry>
498
499 <varlistentry><term><option>-t</option></term>
500 <term><option>--target-release</option></term>
501 <term><option>--default-release</option></term>
502 <listitem><para>This option controls the default input to the policy engine, it creates
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503 a default pin at priority 990 using the specified release string.
504 This overrides the general settings in <filename>/etc/apt/preferences</filename>.
505 Specifically pinned packages are not affected by the value
506 of this option. In short, this option
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507 lets you have simple control over which distribution packages will be
508 retrieved from. Some common examples might be
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509 <option>-t '2.1*'</option>, <option>-t unstable</option>
510 or <option>-t sid</option>.
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511 Configuration Item: <literal>APT::Default-Release</literal>;
512 see also the &apt-preferences; manual page.</para></listitem>
513 </varlistentry>
514
515 <varlistentry><term><option>--trivial-only</option></term>
516 <listitem><para>
517 Only perform operations that are 'trivial'. Logically this can be considered
518 related to <option>--assume-yes</option>, where <option>--assume-yes</option> will answer
519 yes to any prompt, <option>--trivial-only</option> will answer no.
520 Configuration Item: <literal>APT::Get::Trivial-Only</literal>.</para></listitem>
521 </varlistentry>
522
523 <varlistentry><term><option>--no-remove</option></term>
524 <listitem><para>If any packages are to be removed apt-get immediately aborts without
525 prompting.
526 Configuration Item: <literal>APT::Get::Remove</literal>.</para></listitem>
527 </varlistentry>
528
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529 <varlistentry><term><option>--auto-remove</option></term>
530 <listitem><para>If the command is either <literal>install</literal> or <literal>remove</literal>,
531 then this option acts like running <literal>autoremove</literal> command, removing the unused
532 dependency packages. Configuration Item: <literal>APT::Get::AutomaticRemove</literal>.
533 </para></listitem>
534 </varlistentry>
535
24f6490f 536 <varlistentry><term><option>--only-source</option></term>
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537 <listitem><para>Only has meaning for the
538 <literal>source</literal> and <literal>build-dep</literal>
539 commands. Indicates that the given source names are not to be
540 mapped through the binary table. This means that if this option
541 is specified, these commands will only accept source package
542 names as arguments, rather than accepting binary package names
543 and looking up the corresponding source package. Configuration
544 Item: <literal>APT::Get::Only-Source</literal>.</para></listitem>
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545 </varlistentry>
546
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547 <varlistentry><term><option>--diff-only</option></term><term><option>--dsc-only</option></term><term><option>--tar-only</option></term>
548 <listitem><para>Download only the diff, dsc, or tar file of a source archive.
549 Configuration Item: <literal>APT::Get::Diff-Only</literal>, <literal>APT::Get::Dsc-Only</literal>, and
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550 <literal>APT::Get::Tar-Only</literal>.</para></listitem>
551 </varlistentry>
552
553 <varlistentry><term><option>--arch-only</option></term>
554 <listitem><para>Only process architecture-dependent build-dependencies.
555 Configuration Item: <literal>APT::Get::Arch-Only</literal>.</para></listitem>
556 </varlistentry>
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557
558 <varlistentry><term><option>--allow-unauthenticated</option></term>
559 <listitem><para>Ignore if packages can't be authenticated and don't prompt about it.
e3a1f08d 560 This is useful for tools like pbuilder.
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561 Configuration Item: <literal>APT::Get::AllowUnauthenticated</literal>.</para></listitem>
562 </varlistentry>
24f6490f 563
b3d44315 564
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565 &apt-commonoptions;
566
567 </variablelist>
568 </refsect1>
569
570 <refsect1><title>Files</title>
571 <variablelist>
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572 &file-sourceslist;
573 &file-aptconf;
574 &file-preferences;
575 &file-cachearchives;
576 &file-statelists;
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577 </variablelist>
578 </refsect1>
579
580 <refsect1><title>See Also</title>
581 <para>&apt-cache;, &apt-cdrom;, &dpkg;, &dselect;, &sources-list;,
65d71b38 582 &apt-conf;, &apt-config;, &apt-secure;,
4d9fb6b0 583 The APT User's guide in &guidesdir;, &apt-preferences;, the APT Howto.</para>
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584 </refsect1>
585
586 <refsect1><title>Diagnostics</title>
587 <para><command>apt-get</command> returns zero on normal operation, decimal 100 on error.</para>
588 </refsect1>
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589 <refsect1>
590 <title>ORIGINAL AUTHORS</title>
4a09fd30 591 <para>&apt-author.jgunthorpe;</para>
77c9def7 592 </refsect1>
4a09fd30 593 <refsect1>
77c9def7 594 <title>CURRENT AUTHORS</title>
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595 <para>
596 &apt-author.team;
4a09fd30 597 </para>
651001f7 598 &apt-qapage;
4a09fd30 599 </refsect1>
24f6490f 600 &manbugs;
24f6490f 601</refentry>