dpkg-query - a tool to query the dpkg database

Linux Command Options:

dpkg-query [option...] command

-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 marked as not-installed (i.e. those which have been previously purged). Normal shell wildchars are allowed in package-name-pattern. Please note you will probably have to quote package-name-pattern

-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 --show‐
format 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.

-c, --control-path package-name [control-file]
List paths for control files installed to your system from package-name. If control-file is specified then only list the path for that
control file if it is present. Warning: this command is semi-public, it should be used only as a last resort solution, and if no other
interface is available. It might get deprecated later on if better interfaces or the current architectural deficiencies have been solved.

-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.