# dpkg-query
# A tool that shows information about installed packages.
# More information: <https://manpages.debian.org/latest/dpkg/dpkg-query.1.html>.
# 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
$
cheat.sh
tldr