pacman-query

Arch Linux package manager utility.

List installed packages and versions

$ pacman --query

List only packages and versions that were explicitly installed

$ pacman --query --explicit

Find which package owns a file

$ pacman --query --owns [filename]

Display information about an installed package

$ pacman --query --info [package]

List files owned by a package

$ pacman --query --list [package]

List orphan packages (installed as dependencies but not required by any package)

$ pacman --query --unrequired --deps --quiet

List installed packages not found in the repositories

$ pacman --query --foreign

List outdated packages

$ pacman --query --upgrades