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||<tablewidth="100%">~-Translation(s): -~ ||<style="TEXT-ALIGN: right"> (!) [[/Discussion]] || ||<tablestyle="width: 100%;" style="border: 0px hidden">~-[[DebianWiki/EditorGuide#translation|Translation(s)]]: English - [[fr/ListInstalledPackages|Français]] - [[it/ListInstalledPackages|Italiano]] - [[ja/ListInstalledPackages|日本語(Nihongo)]]-~||<style="text-align: right;border: 0px hidden"> (!) [[/Discussion|Discussion]]||
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This page is about the ways to list the installed packages in a Debian system and how to create a file with this list. This file can be uploaded to the web (i.e. from other computer with Internet connection) to download new packages.

=== List all packages installed ===

 * dpkg-query -l


 * DebPkg:dpkg --list

=== List packages using a search pattern ===

It is possible to add a search pattern to list packages:

dpkg-query -l 'foo*'

=== Storing a list of installed packages in a file ===

And to store in a file:

 * dpkg --list > /backup/installed-software.log

=== Show status of all packages on the system ===

To check the status of all packages on your system:

 * dpkg -l | more

This will show all packages (1 line each) that are in various stages of install (this includes packages that were removed but not purged). To show only the installed:

 * dpkg -l | DebPkg:grep '^i'

to filter through grep to get results for "i"

The command above is some how redundant, because dpkg support WikiPedia:Wildcard_character , doing this instead

 * dpkg-query -l 'i*'


 * dpkg -l "ii"

You can also use:

 * DebPkg:apt-cache pkgnames
You can if you are using Debian Linux use dpkg command to list installed software:

 * dpkg --get-selections
And store the list installed software to a file called /backup/installed-software.log

$ dpkg --get-selections > /backup/installed-software.log

You can also find package information in the next directories (you can use DebPkg:mc or other FileManager to browse them):

 * /var/lib/apt/lists/*
 * /var/lib/dpkg/available: list of available packages.
 * /var/lib/dpkg/status :statuses of available packages. This file contains information about whether a package is marked for removing or not, whether it is installed or not, etc. A package marked reinst-required is broken and requires reinstallation.

== Restore installed software ==

After re-installing base system you can immediately re-install all software.

All you have to do is type following two commands:

 * dpkg --set-selections < /backup/installed-software.log
Now your list is imported use dselect, [[Synaptic]] or other PackageManagement tools to install the package :

 * dselect
Select ‘i‘ for install the software

You can also use “apt-get dselect-upgrade” instead of dselect

All this with a single command:
apt-get install `cat installed-software.log`
See [[AptCLI#List_installed_packages]]
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 * [[http://manpages.debian.net/man/1/dpkg-query|dpkg-query]]
* [[http://manpages.debian.net/man/8/dpkg-www|dpkg-www]]
 * DebPkg:debfoster - If dependency changes, debfoster ask if you want to remove the old package.

* [[DebianMan:1/dpkg-query|dpkg-query(1)]] manpage
 * DebianPkg:debfoster - If dependency changes, debfoster ask if you want to remove the old package.
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 * WikiPedia:JIG (Wikipedia article about JIG) and DebPkg:JIG (Package JIG)
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Translation(s): English - Français - Italiano - 日本語(Nihongo)

(!) ?Discussion

See AptCLI#List_installed_packages

See also