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GNU/Linux |
Ubuntu 9.04(Jaunty Jackalope) |
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dpkg-query(1) |
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dpkg−query − a tool to query the dpkg database
dpkg−query [option...] command
dpkg−query is a tool to show information about packages listed in the dpkg database.
−l, −−list package-name-pattern...
List packages matching given pattern. If no package-name-pattern is given, list all packages in /var/lib/dpkg/status, excluding the ones marked with state purge. Normal shell wildchars are allowed in package-name-pattern. Please note you will probably have to quote package-name-pattern to prevent the shell from performing filename expansion. For example this will list all package names starting with “libc6”:
dpkg−query −l 'libc6*'
The output format of this option is not configurable, but varies automatically to fit the terminal width. It is intended for human readers, and is not easily machine-readable. See −W (−−show) and −−showformat for a way to configure the output format.
−W, −−show package-name-pattern...
Just like the −−list option this will list all packages matching the given pattern. However the output can be customized using the −−showformat option. The default output format gives one line per matching package, each line having the name and installed version of the package, separated by a tab.
−s, −−status package-name...
Report status of specified package. This just displays the entry in the installed package status database.
−L, −−listfiles package-name...
List files installed to your system from package-name. However, note that files created by package-specific installation-scripts are not listed.
−S, −−search filename-search-pattern...
Search for a filename from installed packages. All standard shell wildchars can be used in the pattern. This command will not list extra files created by maintainer scripts, nor will it list alternatives.
−p, −−print−avail package-name...
Display details about package-name, as found in /var/lib/dpkg/available.
−h, −−help
Show the usage message and exit.
−−version
Show the version and exit.
−−license, −−licence
Show the copyright licensing terms and exit.
−−admindir=dir
Change the location of the dpkg database. The default location is /var/lib/dpkg.
−f, −−showformat=format
This option is used to specify the format of the output −−show will produce. The format is a string that will be output for each package listed.
In the format string, “\” introduces escapes:
\n
newline
\r carriage return
\t tab
“\” before any other character suppresses any special meaning of the following character, which is useful for “\” and “$”.
Package information can be included by inserting variable references to package fields using the syntax “${field[;width]}”. Fields are printed right-aligned unless the width is negative in which case left alignment will be used. The following fields are recognised:
Architecture
Bugs
Conffiles
Config−Version
Conflicts
Breaks
Depends
Description
Enhances
Essential
Filename
Homepage
Installed−Size
MD5sum
MSDOS−Filename
Maintainer
Origin
Package
Pre−Depends
Priority
Provides
Recommends
Replaces
Revision
Section
Size
Source
Status
Suggests
Tag
Version
The default format string is “${Package}\t${Version}\n”. Actually, all other fields found in the status file (i.e. user defined fields) can be requested, too. They will be printed as-is, though, no conversion nor error checking is done on them. To get the name of the dpkg maintainer and the installed version, you could run:
dpkg−query −W −f='${Package} ${Version}\t${Maintainer}\n' dpkg
COLUMNS
This setting influences the output of the −−list option by changing the width of its output.
Copyright (C) 2001 Wichert Akkerman
This is free software; see the GNU General Public Licence version 2 or later for copying conditions. There is NO WARRANTY.
dpkg(1).
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dpkg-query(1) | |