[2024-feb-29] Sad news: Eric Layton aka Nocturnal Slacker aka vtel57 passed away on Feb 26th, shortly after hospitalization. He was one of our Wiki's most prominent admins. He will be missed.

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—howtos:slackware_admin:querying_installed_packages [2012/09/25 04:17 (UTC)] – moved from the general howtos namespace mfillpot
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 +<!-- Add your text below. We strongly advise to start with a Headline (see button bar above). -->
 +===== Querying Installed Packages =====
  
 +Sometimes you might want to check whether a particular package is installed or which version of a package is installed on your system. If the package is part of the Slackware installation you could use the ''slackpkg'' tool:
 +
 +<code>
 +# slackpkg info emacs
 +
 +PACKAGE NAME:  emacs-24.1-x86_64-6.txz
 +PACKAGE LOCATION:  ./slackware64/e
 +PACKAGE SIZE (compressed):  36704 K
 +PACKAGE SIZE (uncompressed):  110720 K
 +PACKAGE DESCRIPTION:
 +emacs: emacs (GNU Emacs)
 +emacs:
 +emacs: Emacs is the extensible, customizable, self-documenting real-time
 +emacs: display editor. If this seems to be a bit of a mouthful, an
 +emacs: easier explanation is that Emacs is a text editor and more. At
 +emacs: its core is an interpreter for Emacs Lisp, a dialect of the Lisp
 +emacs: programming language with extensions to support text editing.
 +emacs: This version supports X.
 +emacs:
 +emacs: http://www.gnu.org/software/emacs/
 +emacs:</code>
 +
 +This works fine for Slackware core packages. Some of us, however, install additional programs from a number of sources (eg. [[http://www.slackbuilds.org|SlackBuilds]]), which are not taken into account by ''slackpkg''. Another method which includes all correctly installed* packages is as follows:
 +
 +<code>ls /var/log/packages | grep i3
 +i3-4.2-x86_64-1_SBo
 +i3status-2.5.1-x86_64-1_SBo</code>
 +
 +First we list the contents of the ''/var/log/packages'' directory which includes the names of all the currently installed packages. Then we pipe it to grep to narrow down the results and only display packages matching our pattern.
 +
 +Another example showing all packages installed from Slackbuilds:
 +
 +<code>ls /var/log/packages | grep SBo</code>
 +
 +If you don't want to type it each time, you could create a very short script and add it to your path:
 +
 +<file bash pkg.sh>
 +#!/bin/sh
 +packages_dir=/var/log/packages/
 +
 +if [ "$#" -eq 1 ]; then
 +        ls $packages_dir | grep $1
 +else
 +        echo "Please, provide one argument"
 +fi</file>
 +
 +<code>$ pkg.sh cairo
 +cairo-1.10.2-x86_64-2
 +cairomm-1.9.8-x86_64-1_SBo
 +pycairo-1.8.10-x86_64-2</code>
 +
 +
 +<note>*Please note that if you directly run binary installers (eg. ''VirtualBox''), a program will not have an entry in ''/var/log/packages/''.</note>
 +
 +===== Sources =====
 +  * Originally written by [[wiki:user:sycamorex]]
 +
 +<!-- Please do not add anything below, except additional tags.-->
 +<!-- However we request that you remove the tag-word "template" below. Otherwise your page will not show up in the Table of Contents -->
 +
 +<!-- Do not remove this line and the tag definition below. Thanks! slackdocs@-->
 +{{tag>howtos software package_management package_tracking author_sycamorex}}

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