# dpkg-query > Display information about installed packages. > More information: . - List all installed packages: `dpkg-query {{[-l|--list]}}` - List installed packages matching a pattern: `dpkg-query {{[-l|--list]}} '{{libc6*}}'` - List all files installed by a package: `dpkg-query {{[-L|--listfiles]}} {{libc6}}` - Show information about a package: `dpkg-query {{[-s|--status]}} {{libc6}}` - Search for packages that own files matching a pattern: `dpkg-query {{[-S|--search]}} {{/etc/ld.so.conf.d}}`