Pacman - Arch Package Manager

Install Local Package

# make and install
makepkg -si

Predownload Pacman Updates

Create this Cronjob to update every 3 days.

0 * */3 * * checkupdates -d

Downgrade Packages From Cache

# downgrade virtualbox
sudo pacman -U /var/cache/pacman/pkg/virtualbox-6.1.16-3-x86_64.pkg.tar.zst

Ignore Package Updates

# edit /etc/pacman.conf
IgnorePkg   = virtualbox

Remove Cached Packages

sudo paccache -r
yay -Sc

Remove Orphaned Packages

sudo pacman -Rsn $(pacman -Qdtq)

Find Which Pacman Package Contains a Certain File

Useful if you receive Latex errors, which complain that i.e ulem.sty is missing

sudo pacman -Fy ulem.sty