dpkg-query

Display information about installed packages. More information: https://manned.org/dpkg-query.1.

• List all installed packages:

dpkg-query --list

• List installed packages matching a pattern:

dpkg-query --list 'libc6*'

• List all files installed by a package:

dpkg-query --listfiles libc6

• Show information about a package:

dpkg-query --status libc6

• Search for packages that own files matching a pattern:

dpkg-query --search /etc/ld.so.conf.d