APT(8) APT APT(8)
NAME
apt - command-line interface
SYNOPSIS
apt [-h] [-o=config_string] [-c=config_file] [-t=target_release] [-a=architecture] {list | search | show | update |
install pkg [{=pkg_version_number | /target_release}]... | remove pkg... | upgrade | full-upgrade | edit-sources |
{-v | --version} | {-h | --help}}
DESCRIPTION
apt provides a high-level commandline interface for the package management system. It is intended as an end user interface
and enables some options better suited for interactive usage by default compared to more specialized APT tools like apt-
get(8) and apt-cache(8).
Much like apt itself, its manpage is intended as an end user interface and as such only mentions the most used commands and
options partly to not duplicate information in multiple places and partly to avoid overwhelming readers with a cornucopia of
options and details.
update (apt-get(8))
update is used to download package information from all configured sources. Other commands operate on this data to e.g.
perform package upgrades or search in and display details about all packages available for installation.
upgrade (apt-get(8))
upgrade is used to install available upgrades of all packages currently installed on the system from the sources
configured via sources.list(5). New packages will be installed if required to satisfy dependencies, but existing
packages will never be removed. If an upgrade for a package requires the removal of an installed package the upgrade for
this package isn't performed.
full-upgrade (apt-get(8))
full-upgrade performs the function of upgrade but will remove currently installed packages if this is needed to upgrade
the system as a whole.
install, reinstall, remove, purge (apt-get(8))
Performs the requested action on one or more packages specified via regex(7), glob(7) or exact match. The requested
action can be overridden for specific packages by appending a plus (+) to the package name to install this package or a
minus (-) to remove it.
A specific version of a package can be selected for installation by following the package name with an equals (=) and
the version of the package to select. Alternatively the version from a specific release can be selected by following the
package name with a forward slash (/) and codename (bookworm, trixie, sid ...) or suite name (stable, testing,
unstable). This will also select versions from this release for dependencies of this package if needed to satisfy the
request.
Removing a package removes all packaged data, but leaves usually small (modified) user configuration files behind, in
case the remove was an accident. Just issuing an installation request for the accidentally removed package will restore
its function as before in that case. On the other hand you can get rid of these leftovers by calling purge even on
already removed packages. Note that this does not affect any data or configuration stored in your home directory.
autoremove (apt-get(8))
autoremove is used to remove packages that were automatically installed to satisfy dependencies for other packages and
are now no longer needed as dependencies changed or the package(s) needing them were removed in the meantime.
You should check that the list does not include applications you have grown to like even though they were once installed
just as a dependency of another package. You can mark such a package as manually installed by using apt-mark(8).
Packages which you have installed explicitly via install are also never proposed for automatic removal.
satisfy (apt-get(8))
satisfy satisfies dependency strings, as used in Build-Depends. It also handles conflicts, by prefixing an argument with
"Conflicts: ".
Example: apt satisfy "foo, bar (>= 1.0)" "Conflicts: baz, fuzz"
search (apt-cache(8))
search can be used to search for the given regex(7) term(s) in the list of available packages and display matches. This
can e.g. be useful if you are looking for packages having a specific feature. If you are looking for a package including
a specific file try apt-file(1).
show (apt-cache(8))
Show information about the given package(s) including its dependencies, installation and download size, sources the
package is available from, the description of the packages content and much more. It can e.g. be helpful to look at this
information before allowing apt(8) to remove a package or while searching for new packages to install.
list
list is somewhat similar to dpkg-query --list in that it can display a list of packages satisfying certain criteria. It
supports glob(7) patterns for matching package names as well as options to list installed (--installed), upgradeable
(--upgradeable) or all available (--all-versions) versions.
edit-sources (work-in-progress)
edit-sources lets you edit your sources.list(5) files in your preferred text editor while also providing basic sanity
checks.
SCRIPT USAGE AND DIFFERENCES FROM OTHER APT TOOLS
The apt(8) commandline is designed as an end-user tool and it may change behavior between versions. While it tries not to
break backward compatibility this is not guaranteed either if a change seems beneficial for interactive use.
All features of apt(8) are available in dedicated APT tools like apt-get(8) and apt-cache(8) as well. apt(8) just changes
the default value of some options (see apt.conf(5) and specifically the Binary scope). So you should prefer using these
commands (potentially with some additional options enabled) in your scripts as they keep backward compatibility as much as
possible.
SEE ALSO
apt-get(8), apt-cache(8), sources.list(5), apt.conf(5), apt-config(8), The APT User's guide in /usr/share/doc/apt-doc/,
apt_preferences(5), the APT Howto.
DIAGNOSTICS
apt returns zero on normal operation, decimal 100 on error.
BUGS
APT bug page[1]. If you wish to report a bug in APT, please see /usr/share/doc/debian/bug-reporting.txt or the reportbug(1)
command.
AUTHOR
APT team
NOTES
1. APT bug page
http://bugs.debian.org/src:apt
APT 2.6.0ubuntu0.1 05 April 2020 APT(8)