- Clean pkg cache
 - Remove unused packages (orphans)
 - Clean cache in /home
 - remove old config files
 - Find and Remove
- duplicates
 - empty files
 - empty directories
 - broken symlinks
 
 - Find Large files
 
List packages
ls /var/cache/pacman/pkg/ | less Remove all pkg except those installed
sudo pacman -Sc 
Remove all files
sudo pacman -Scc
Download manually from archive.
sudo pacman -S pacman-contrib
Remove
paccache -r
Systemd timer
create file in /etc/systemd/system/paccache.timer with the following contents
[Unit]
Description=Clean-up old pacman pkg cache
[Timer]
OnCalendar=monthly
Persistent=true
[Install]
WantedBy=multi-user.target
Enable by sudo systemctl start paccache.timer
Pacman post-transaction hook
List unused
sudo pacman -Qtdq
Remove unused
sudo pacman -R $(pacman -Qtdq)
cache is located in ~/.cache
stored in ~/.config/
install rmlint package sudo pacman -S rm lint.