Provided by: apt_0.8.16~exp12ubuntu10_i386 bug

NAME

       apt.conf - APT

       apt.conf APT

       APT

        1. APT_CONFIG  ()

        2. all files in Dir::Etc::Parts in alphanumeric ascending order which
           have either no or "conf" as filename extension and which only
           contain alphanumeric, hyphen (-), underscore (_) and period (.)
           characters. Otherwise APT will print a notice that it has ignored a
           file if the file doesn't match a pattern in the
           Dir::Ignore-Files-Silently configuration list - in this case it
           will be silently ignored.

        3. Dir::Etc::Main

        4.

       2 APT::Get::Assume-Yes APT  Get

       bind  dhcp  ISC //  () C/C++ /* */

           APT::Get::Assume-Yes
           "true";

       1 "\"  "/-:._+"

           APT {
             Get {
               Assume-Yes "true";
               Fix-Broken "true";
             };
           };

        1

           DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";};

       /usr/share/doc/apt/examples/apt.conf
       /usr/share/doc/apt/examples/configure-index.gz

        dpkg::pre-install-pkgs

        DPkg::Pre-Install-Pkgs

       #include () #clear  2 #include #clear  ()

       #clear  ::

        APT  -o  (: APT::Get::Assume-Yes) ::  ()

       1  1  ::  ( :: ) "::" ()  "::" APT APT

APT

        APT

       Architecture
            - apt

       Architectures
           All Architectures the system supports. Processors implementing the
           amd64 are e.g. also able to execute binaries compiled for i386;
           This list is use when fetching files and parsing package lists. The
           internal default is always the native architecture
           (APT::Architecture) and all foreign architectures it can retrieve
           by calling dpkg --print-foreign-architectures.

       Default-Release
            'stable', 'testing', 'unstable', 'squeeze', 'wheezy', '4.0',
           '5.0*' apt_preferences(5)

       Ignore-Hold
            -

       Clean-Installed
           autoclean  on off  APT

       Immediate-Configure
           APT dpkg(1) APT  A  B  A dpkg  ( B ) A A A  APT dist-upgrade APT
           install  APT

       Force-LoopBreak
            (essential)  (Conflicts) // (Pre-Depend) tar, gzip, libc, dpkg,
           bash

       Cache-Start, Cache-Grow and Cache-Limit
           APT uses since version 0.7.26 a resizable memory mapped cache file
           to store the 'available' information.  Cache-Start acts as a hint
           to which size the Cache will grow and is therefore the amount of
           memory APT will request at startup. The default value is 20971520
           bytes (~20 MB). Note that these amount of space need to be
           available for APT otherwise it will likely fail ungracefully, so
           for memory restricted devices these value should be lowered while
           on systems with a lot of configured sources this might be
           increased.  Cache-Grow defines in byte with the default of 1048576
           (~1 MB) how much the Cache size will be increased in the event the
           space defined by Cache-Start is not enough. These value will be
           applied again and again until either the cache is big enough to
           store all information or the size of the cache reaches the
           Cache-Limit. The default of Cache-Limit is 0 which stands for no
           limit. If Cache-Grow is set to 0 the automatic grow of the cache is
           disabled.

       Build-Essential

       Get
           Get apt-get(8) apt-get(8)

       Cache
           Cache apt-cache(8) apt-cache(8)

       CDROM
           CDROM apt-cdrom(8) apt-cdrom(8)

ACQUIRE

        Acquire  URI .PP Check-Valid-Until
           Security related option defaulting to true as an expiring
           validation for a Release file prevents longtime replay attacks and
           can e.g. also help users to identify no longer updated mirrors -
           but the feature depends on the correctness of the time on the user
           system. Archive maintainers are encouraged to create Release files
           with the Valid-Until header, but if they don't or a stricter value
           is volitional the following Max-ValidTime option can be used.

       Max-ValidTime
           Seconds the Release file should be considered valid after it was
           created (indicated by the Date header). If the Release file itself
           includes a Valid-Until header the earlier date of the two is used
           as the expiration date. The default value is 0 which stands for
           "for ever". Archive specific settings can be made by appending the
           label of the archive to the option name.

       Min-ValidTime
           Minimum of seconds the Release file should be considered valid
           after it was created (indicated by the Date header). Use this if
           you need to use a seldomly updated (local) mirror of a more regular
           updated archive with a Valid-Until header instead of completely
           disabling the expiration date checking. Archive specific settings
           can and should be used by appending the label of the archive to the
           option name.

       PDiffs
           Packages  Sources PDiffs  True

           Two sub-options to limit the use of PDiffs are also available: With
           FileLimit can be specified how many PDiff files are downloaded at
           most to patch a file.  SizeLimit on the other hand is the maximum
           percentage of the size of all patches compared to the size of the
           targeted file. If one of these limits is exceeded the complete file
           is downloaded instead of the patches.

       Queue-Mode
            - Queue-Mode APT host access host  1 access URI  1

       Retries
           0 APT

       Source-Symlinks
           true true

       http
           HTTP URI - http::Proxy  http http://[[user][:pass]@]host[:port]/
           http::Proxy::<host> DIRECT http_proxy

           HTTP/1.1  3 No-Cache Max-Age  1 Debian No-Store  .deb ) Squid 2.0.2

           timeout

            RFC (Squid 2.0.2 ) Acquire::http::Pipeline-Depth APT  0  5 TCP 0
           RFC 2068

           Acquire::http::Dl-Limit  0  ()

           Acquire::http::User-Agent http  User-Agent

       https
           HTTPS URI - AllowRedirectDl-Limit http https http Pipeline-Depth

           CaInfo <host>::CaInfo Verify-Peer <host>::Verify-Peer Verify-Host
           <host>::Verify-Host SslCert <host>::SslCert SslKey <host>::SslKey
           SslForceVersion  SSL 'TLSv1'  'SSLv3' <host>::SslForceVersion

       ftp
           FTP URI - ftp::Proxy ftp://[[user][:pass]@]host[:port]/
           ftp::Proxy::<host> DIRECT ftp_proxy ftp ftp::ProxyLogin
           /usr/share/doc/apt/examples/configure-index.gz $(PROXY_USER)
           $(PROXY_PASS) $(SITE_USER) $(SITE_PASS) $(SITE) $(SITE_PORT)  URI

           timeout

            ftp  ()

            ftp_proxy  http url  FTP over HTTP  http  FTP over HTTP

           ForceExtended  RFC2428 EPSV EPRT  false  IPv6  true IPv4  FTP
           RFC2428

       cdrom
           CDROM URI - CDROM URI /etc/fstab CDROM cdrom::Mount (SMB  mount )
           fstab cdrom

               /cdrom/::Mount "foo";

            UMount

       gpgv
           GPGV URI - GPGV URI gpgv gpgv::Options  gpgv

       CompressionTypes
           acquire Packages  acquire bzip2, lzma, gzip

               Acquire::CompressionTypes::FileExtension "Methodname";

           Order

               Acquire::CompressionTypes::Order:: "gz";

           gzip bzip2 lzma lzma gzip bzip2

               Acquire::CompressionTypes::Order { "lzma"; "gz"; };

           bz2

           Note that at run time the Dir::Bin::Methodname will be checked: If
           this setting exists the method will only be used if this file
           exists, e.g. for the bzip2 method (the inbuilt) setting is:

               Dir::Bin::bzip2 "/bin/bzip2";

           Note also that list entries specified on the command line will be
           added at the end of the list specified in the configuration files,
           but before the default entries. To prefer a type in this case over
           the ones specified in the configuration files you can set the
           option direct - not in list style. This will not override the
           defined list, it will only prefix the list with this type.

           The special type uncompressed can be used to give uncompressed
           files a preference, but note that most archives don't provide
           uncompressed files so this is mostly only useable for local
           mirrors.

       GzipIndexes
           When downloading gzip compressed indexes (Packages, Sources, or
           Translations), keep them gzip compressed locally instead of
           unpacking them. This saves quite a lot of disk space at the expense
           of more CPU requirements when building the local package caches.
           False by default.

       Languages
           The Languages subsection controls which Translation files are
           downloaded and in which order APT tries to display the
           Description-Translations. APT will try to display the first
           available Description in the Language which is listed at first.
           Languages can be defined with their short or long Languagecodes.
           Note that not all archives provide Translation files for every
           Language - especially the long Languagecodes are rare, so please
           inform you which ones are available before you set here impossible
           values.

           The default list includes "environment" and "en". "environment" has
           a special meaning here: It will be replaced at runtime with the
           languagecodes extracted from the LC_MESSAGES environment variable.
           It will also ensure that these codes are not included twice in the
           list. If LC_MESSAGES is set to "C" only the Translation-en file (if
           available) will be used. To force apt to use no Translation file
           use the setting Acquire::Languages=none. "none" is another special
           meaning code which will stop the search for a fitting Translation
           file. This can be used by the system administrator to let APT know
           that it should download also this files without actually use them
           if the environment doesn't specify this languages. So the following
           example configuration will result in the order "en, de" in an
           english and in "de, en" in a german localization. Note that "fr" is
           downloaded, but not used if APT is not used in a french
           localization, in such an environment the order would be "fr, de,
           en".

               Acquire::Languages { "environment"; "de"; "en"; "none"; "fr"; };

       Dir::State lists status  dpkg preferences  APT  Dir::State / ./

       Dir::Cache Dir::Cache::archives srcpkgcache pkgcache srcpkgcache
       pkgcache Dir::State Dir::Cache

       Dir::Etc sourcelist main (APT_CONFIG )

       Dir::Parts

        Dir::Bin Dir::Bin::Methods gzip, bzip2, lzma, dpkg, apt-get
       dpkg-source dpkg-buildpackage, apt-cache

        RootDir Dir:: RootDir RootDir /tmp/staging Dir::State::status
       /var/lib/dpkg/status status /tmp/staging/var/lib/dpkg/status

       The Ignore-Files-Silently list can be used to specify which files APT
       should silently ignore while parsing the files in the fragment
       directories. Per default a file which end with .disabled, ~, .bak or
       .dpkg-[a-z]+ is silently ignored. As seen in the last default value
       these patterns can use regular expression syntax.

DSELECT APT

       dselect(1)  APT DSelect

       Clean
            -  always, prompt, auto, pre-auto, never always  prompt prompt ()
           auto  () pre-auto

           install apt-get(8)

       Updateoptions
           update apt-get(8)

       PromptAfterUpdate
           true dselect(1)  [U]pdate

APT DPKG

        APT dpkg(1) DPkg

           dpkg dpkg(1)

       Pre-Invoke, Post-Invoke
           dpkg(1) options /bin/sh  APT

       Pre-Install-Pkgs
           dpkg(1) options /bin/sh APT APT  .deb

            2 ( APT ) DPkg::Tools::options::cmd::Version  2  2 cmd
           Pre-Install-Pkgs

       Run-Directory
           APT  dpkg /

       Build-options
            dpkg-buildpackage(1)

   dpkg  ()
       APT can call dpkg in a way so it can make aggressive use of triggers
       over multiple calls of dpkg. Without further options dpkg will use
       triggers only in between his own run. Activating these options can
       therefore decrease the time needed to perform the install / upgrade.
       Note that it is intended to activate these options per default in the
       future, but as it changes the way APT calling dpkg drastically it needs
       a lot more testing.  These options are therefore currently experimental
       and should not be used in productive environments.  Also it breaks the
       progress reporting so all frontends will currently stay around half (or
       more) of the time in the 100% state while it actually configures all
       packages.

       Note that it is not guaranteed that APT will support these options or
       that these options will not cause (big) trouble in the future. If you
       have understand the current risks and problems with these options, but
       are brave enough to help testing them create a new configuration file
       and test a combination of options. Please report any bugs, problems and
       improvements you encounter and make sure to note which options you have
       used in your reports. Asking dpkg for help could also be useful for
       debugging proposes, see e.g.  dpkg --audit. A defensive option
       combination would be

           DPkg::NoTriggers "true";
           PackageManager::Configure "smart";
           DPkg::ConfigurePending "true";
           DPkg::TriggersPending "true";

       DPkg::NoTriggers
           Add the no triggers flag to all dpkg calls (except the
           ConfigurePending call). See dpkg(1) if you are interested in what
           this actually means. In short: dpkg will not run the triggers when
           this flag is present unless it is explicitly called to do so in an
           extra call. Note that this option exists (undocumented) also in
           older apt versions with a slightly different meaning: Previously
           these option only append --no-triggers to the configure calls to
           dpkg - now apt will add these flag also to the unpack and remove
           calls.

       PackageManager::Configure
           Valid values are "all", "smart" and "no". "all" is the default
           value and causes APT to configure all packages explicit. The
           "smart" way is it to configure only packages which need to be
           configured before another package can be unpacked (Pre-Depends) and
           let the rest configure by dpkg with a call generated by the next
           option. "no" on the other hand will not configure anything and
           totally rely on dpkg for configuration (which will at the moment
           fail if a Pre-Depends is encountered). Setting this option to
           another than the all value will implicitly activate also the next
           option per default as otherwise the system could end in an
           unconfigured status which could be unbootable!

       DPkg::ConfigurePending
           If this option is set apt will call dpkg --configure --pending to
           let dpkg handle all required configurations and triggers. This
           option is activated automatic per default if the previous option is
           not set to all, but deactivating could be useful if you want to run
           APT multiple times in a row - e.g. in an installer. In these
           sceneries you could deactivate this option in all but the last run.

       DPkg::TriggersPending
           Useful for smart configuration as a package which has pending
           triggers is not considered as installed and dpkg treats them as
           unpacked currently which is a dealbreaker for Pre-Dependencies (see
           debbugs #526774). Note that this will process all triggers, not
           only the triggers needed to configure this package.

       PackageManager::UnpackAll
           As the configuration can be deferred to be done at the end by dpkg
           it can be tried to order the unpack series only by critical needs,
           e.g. by Pre-Depends. Default is true and therefore the "old" method
           of ordering in various steps by everything. While both method were
           present in earlier APT versions the OrderCritical method was
           unused, so this method is very experimental and needs further
           improvements before becoming really useful.

       OrderList::Score::Immediate
           Essential packages (and there dependencies) should be configured
           immediately after unpacking. It will be a good idea to do this
           quite early in the upgrade process as these these configure calls
           require currently also DPkg::TriggersPending which will run quite a
           few triggers (which maybe not needed). Essentials get per default a
           high score but the immediate flag is relatively low (a package
           which has a Pre-Depends is higher rated). These option and the
           others in the same group can be used to change the scoring. The
           following example shows the settings with there default values.

               OrderList::Score {
                    Delete 500;
                    Essential 200;
                    Immediate 10;
                    PreDepends 50;
               };

PERIODIC ARCHIVES

        APT::Periodic APT::Archives /etc/cron.daily/apt apt

       Enabling options in the Debug:: section will cause debugging
       information to be sent to the standard error stream of the program
       utilizing the apt libraries, or enable special program modes that are
       primarily useful for debugging the behavior of apt. Most of these
       options are not interesting to a normal user, but a few may be:

       o    Debug::pkgProblemResolver dist-upgrade, upgrade, install, remove,
           purge

       o    Debug::NoLocking  root  ( apt-get -s install)

       o    Debug::pkgDPkgPM apt dpkg(1)

       o

           Debug::IdentCdrom  CDROM ID  statfs gain

        apt

       Debug::Acquire::cdrom

           cdrom://

       Debug::Acquire::ftp
           FTP

       Debug::Acquire::http
           HTTP

       Debug::Acquire::https
           HTTPS

       Debug::Acquire::gpgv

           gpg

       Debug::aptcdrom
           CD-ROM

       Debug::BuildDeps

           apt-get(8)

       Debug::Hashes

           apt

       Debug::IdentCDROM
           CD-ROM  ID statfs CD-ROM

       Debug::NoLocking
            "apt-get update"

       Debug::pkgAcquire

       Debug::pkgAcquire::Auth

       Debug::pkgAcquire::Diffs

       Debug::pkgAcquire::RRed
           apt

       Debug::pkgAcquire::Worker

       Debug::pkgAutoRemove

       Debug::pkgDepCache::AutoInstall
            apt  (Debug::pkgProblemResolver ) apt-get install

       Debug::pkgDepCache::Marker
           Generate debug messages describing which package is marked as
           keep/install/remove while the ProblemResolver does his work. Each
           addition or deletion may trigger additional actions; they are shown
           indented two additional space under the original entry. The format
           for each line is MarkKeep, MarkDelete or MarkInstall followed by
           package-name <a.b.c -> d.e.f | x.y.z> (section) where a.b.c is the
           current version of the package, d.e.f is the version considered for
           installation and x.y.z is a newer version, but not considered for
           installation (because of a low pin score). The later two can be
           omitted if there is none or if it is the same version as the
           installed.  section is the name of the section the package appears
           in.

       Debug::pkgInitConfig

       Debug::pkgDPkgPM

           dpkg(1)

       Debug::pkgDPkgProgressReporting
           dpkg(1)

       Debug::pkgOrderList

           apt dpkg(1)

       Debug::pkgPackageManager

           dpkg(1)

       Debug::pkgPolicy

       Debug::pkgProblemResolver
            ()

       Debug::pkgProblemResolver::ShowScores
           Display a list of all installed packages with their calculated
           score used by the pkgProblemResolver. The description of the
           package is the same as described in Debug::pkgDepCache::Marker

       Debug::sourceList

           /etc/apt/vendors.list

       /usr/share/doc/apt/examples/configure-index.gz

       /etc/apt/apt.conf
           APT   - Dir::Etc::Main

       /etc/apt/apt.conf.d/
           APT   - Dir::Etc::Parts

       apt-cache(8), apt-config(8), apt_preferences(5).

       APT [1]  APT /usr/share/doc/debian/bug-reporting.txt reportbug(1)

        <nabetaro@debian.or.jp> (2003-2006,2009-2010), Debian JP Documentation
       ML <debian-doc@debian.or.jp>

AUTHORS

       Jason Gunthorpe

       APT

       Daniel Burrows <dburrows@debian.org>
           Debug::*.

NOTES

        1. APT
           http://bugs.debian.org/src:apt