pacman --query

Arch Linux package manager utility. See also: pacman. More information: https://manned.org/pacman.8.

• [Q]uery the local package database and list installed packages and versions:

pacman -Q

• List only packages and versions that were [e]xplicitly installed:

pacman -Qe

• Find which package [o]wns a file:

pacman -Qo {{filename}}

• Display information about an [i]nstalled package:

pacman -Qi {{package}}

• Display the [l]ist of files owned by a specific package:

pacman -Ql {{package}}

• List orphan packages (installed as [d]ependencies but unrequired ([t]) by any package and print in [q]uiet mode (only package name is displayed)):

pacman -Qdtq

• List installed packages foreign ([m]) to the repository database:

pacman -Qm

• List packages that can be [u]pgraded:

pacman -Qu