Arch Package Managers

Upgrade everything: pacman -Syu
Install package: pacman -S <pkg>
Search packages: pacman -Ss <keywords>
Remove package
- pacman -Rsn <pkg>
- pacman -Rsc <pkg>
Modified files in package: pacman -Qkk <pkg>
File list of package: pacman -Ql <pkg>
Which package owns a file: pacman -Qo <file>
What does pkg depend on: pactree <pkg>
What depends on pkg: pactree -r <pkg>
List unneeded packages: pacman -Qdt
List explictly-installed packages: pacman -Qe
List information on package: pacman -Qii <pkg>
Search installed packages for keywords: pacman -Qs <query>
Downgrade package: pacman -U /var/cache/pacman/pkg/linux-5.7.8.arch1-1-x86_64.pkg.tar.zst

sudo reflector --verbose --latest 200 --country Germany --age 12 --protocol https --sort rate --save /etc/pacman.d/mirrorlist

git clone https://aur.archlinux.org/package-query.git
cd package-query/
makepkg -si
cd ..
rm -rf package-query/

git clone https://aur.archlinux.org/yay.git
cd yay
makepkg -si
cd ..
rm -rf yay/

Deletes cached versions of installed and uninstalled packages, except for the most recent 2:

paccache -r -k2

Remove package cache and currently unused sync databases:

pacman -Sc

Remove cached AUR package and any untracked Files in the cache (caution: this command removes pacman caches as well):

yay -Scc

Pacman