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-.\" $Id: apt-get.8,v 1.2 1998/11/23 01:15:56 jgg Exp $
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-.\" This manpage is copyright (C) 1998 Branden Robinson <branden@debian.org>.
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-.\"
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-.\" This is free software; you may redistribute it and/or modify
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-.\" it under the terms of the GNU General Public License as
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-.\" published by the Free Software Foundation; either version 2,
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-.\" or (at your option) any later version.
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-.\"
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-.\" This is distributed in the hope that it will be useful, but
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-.\" WITHOUT ANY WARRANTY; without even the implied warranty of
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-.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-.\" GNU General Public License for more details.
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-.\"
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-.\" You should have received a copy of the GNU General Public
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-.\" License along with APT; if not, write to the Free Software
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-.\" Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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-.\" 02111-1307 USA
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-.TH apt-get 8 "16 June 1998" "Debian GNU/Linux"
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-.SH NAME
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-apt-get \- APT package handling utility \(em command-line interface
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-.SH SYNOPSIS
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-.B apt-get
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-.RI [ options ]
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-.RI [ command ]
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-.RI [ package
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-.IR ... ]
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-.SH DESCRIPTION
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-.B apt-get
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-is the command-line tool for handling packages, and may be considered the
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-user's "back-end" to
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-.BR apt (8).
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-Use
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-.BR apt (8)
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-if the usage of apt-get does not seem intuitive.
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-.PP
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-.I command
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-is one of
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-.RS
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-.PD 0
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-.B update
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-.PP
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-.B upgrade
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-.PP
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-.B dselect-upgrade
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-.PP
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-.B dist-upgrade
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-.PP
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-.B install
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-.PP
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-.B check
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-.PP
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-.B clean
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-.RE
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-.PD 1
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-.PP
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-Unless one of the
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-.IR -h ,
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-.IR --help ,
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-.IR -f ,
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-or
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-.I --fix-broken
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-options is given, one of the above commands must be present. Only the
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-.B install
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-command requires any further arguments.
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-.SS update
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-.B update
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-is used to resynchronize the package overview files from their
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-sources. The overviews of available packages are fetched from the
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-location(s) specified in
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-.IR /etc/apt/sources.list .
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-For example, when using a Debian archive, this command retrieves and
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-scans the
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-.I Packages.gz
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-files, so that information about new and updated packages is available. An
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-.B update
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-should always be performed before an
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-.B upgrade
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-or
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-.BR dist-upgrade .
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-.SS upgrade
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-.B upgrade
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-is used to install the newest versions of all packages currently installed
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-on the system from the sources enumerated in
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-.IR /etc/apt/sources.list .
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-Packages currently installed with new versions available are retrieved
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-and upgraded; under no circumstances are currently installed packages
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-removed, or packages not already installed retrieved and installed. New
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-versions of currently installed packages that cannot be upgraded without
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-changing the install status of another package will be left at their
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-current version. An
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-.B update
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-must be performed first so that
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-.B apt-get
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-knows that new versions of packages are available.
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-.SS dselect-upgrade
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-.B dselect-upgrade
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-is used in conjunction with the traditional Debian GNU/Linux packaging
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-front-end,
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-.BR dselect (8). " dselect-upgrade"
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-follows the changes made by
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-.B dselect
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-to the
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-.I Status
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-field of available packages, and performs the actions necessary to realize
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-that state (for instance, the removal of old and the installation of new
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-packages).
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-.B dselect-upgrade
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-does not attempt to intelligently address dependency issues as
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-.B dist-upgrade
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-or
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-.B install
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-do. If any dependency problems arise,
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-.B apt-get
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-aborts without performing any of the actions requested, even those
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-without problems.
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-.B dselect-upgrade
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-is only useful to users of
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-.B dselect
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-and the
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-.I .deb
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-package file format. The
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-.I /etc/apt/sources.list
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-file contains a list of locations from which to retrieve desired package
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-files.
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-.SS dist-upgrade
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-.BR dist-upgrade ,
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-in addition to performing the function of
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-.BR upgrade ,
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-also intelligently handles changing dependencies with new versions of
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-packages;
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-.B apt-get
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-has a "smart" conflict resolution system, and it will attempt to upgrade
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-the most important packages at the expense of less important ones if
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-necessary. The
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-.I /etc/apt/sources.list
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-file contains a list of locations from which to retrieve desired package
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-files.
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-.SS install
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-.B install
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-is followed by one or more
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-.I packages
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-desired for installation. Each
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-.I package
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-is a package name, not a fully qualified filename (for instance, in a
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-Debian GNU/Linux system,
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-.I lsdo
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-would be the argument provided, not
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-.IR ldso_1.9.6-2.deb ).
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-All packages required by the package(s) specified for installation will
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-also be retrieved and installed. The
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-.I /etc/apt/sources.list
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-file is used to locate the desired packages. If a hyphen is appended to
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-the package name (with no intervening space), the identified package will
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-be removed if it is installed. This latter feature may be used to override
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-decisions made by apt-get's conflict resolution system.
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-.SS check
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-.B check
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-is a diagnostic tool; it updates the package cache and checks for broken
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-packages.
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-.SS clean
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-.B clean
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-clears out the local repository of retrieved package files. It removes
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-everything but the lock file from
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-.I /var/cache/apt/archives/
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-and
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-.IR /var/cache/apt/archives/partial/ .
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-When APT is used as a
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-.BR dselect (8)
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-method,
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-.B
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-clean
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-is run automatically. Those who do not use dselect will likely want to
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-run
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-.B
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-apt-get clean
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-from time to time to free up disk space.
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-.SH OPTIONS
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-.TP
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-.IR \-d , " --download-only"
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-Download only; package files are only retrieved, not unpacked or installed.
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-.TP
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-.IR \-f , " --fix-broken"
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-Fix; attempt to correct a system with broken dependencies in
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-place. This option may be used alone or in conjunction with any of the
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-command actions, and is sometimes necessary when running APT for the
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-first time; APT itself does not allow broken package dependencies to
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-exist on a system. It is possible that a system's dependency structure
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-can be so corrupt as to require manual intervention (which usually
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-means using dselect or dpkg --remove to eliminate some of the offending
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-packages). Use of this option together with -m is discouraged.
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-.TP
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-.IR \-h , " --help"
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-Help; display a helpful usage message and exit.
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-.TP
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-.IR \-m , " --ignore-missing"
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-Ignore missing packages; If packages cannot be retrieved or fail the
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-integrity check after retrieval (corrupted package files), hold back
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-those packages and handle the result. Use of this option together with
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--f is discouraged.
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-.TP
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-.IR \-q , " --silent"
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-Quiet; produces output suitable for logging, omitting progress indicators.
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-.TP
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-.I \-qq
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-Very quiet; no output except for errors.
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-.TP
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-.IR \-s , " --simulate" , " --just-print" , " --dry-run" , " --recon " , " --no-act"
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-No action; perform a simulation of events that would occur but do not
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-actually change the system.
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-.TP
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-.IR \-y , " --yes" , " --assume-yes"
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-Automatic yes to prompts; assume "yes" as answer to all prompts and run
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-non-interactively.
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-.SH FILES
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-.TP
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-.I /etc/apt/sources.list
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-see
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-.BR sources.list (5)
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-.TP
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-.I /var/cache/apt/archives/
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-storage area for retrieved package files
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-.TP
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-.I /var/cache/apt/archives/partial/
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-storage area for package files in transit
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-.TP
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-.I /var/state/apt/lists/
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-storage area for state information for each package resource specified in
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-.I /etc/apt/sources.list
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-.TP
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-.I /var/state/apt/lists/partial/
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-storage area for state information in transit
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-.SH SEE ALSO
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-.BR apt-cache (8),
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-.BR dpkg (8),
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-.BR dselect (8),
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-.BR sources.list (5)
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-.SH DIAGNOSTICS
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-apt-get returns zero on normal operation, decimal 100 on error.
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-.SH BUGS
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-See <http://www.debian.org/Bugs/db/pa/lapt.html>. If you wish to report a
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-bug in
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-.BR apt-get ,
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-please see
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-.I /usr/doc/debian/bug-reporting.txt
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-or the
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-.BR bug (1)
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-command.
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-.SH AUTHOR
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-apt-get was written by the APT team <apt@packages.debian.org>.
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