To clear the package cache in Arch Linux

• Check how many cached packages are available in your cache folder and the occupied size:

$ sudo ls /var/cache/pacman/pkg/ | wc -l

$ du -sh /var/cache/pacman/pkg/ 

•  Use the pacman command to remove all uninstalled packages that are still in cache:

$ sudo pacman -Sc

• To completely remove all packages (whether they are installed or uninstalled) from the cache:

$ sudo pacman -Scc

 

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