====== Arch Package Managers ======

===== Pacman =====
  * 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 ''

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


===== How to Install an AUR helper =====

=== package-query ===

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

</code>
=== yay ===

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

</code>

===== Delete cached files =====
==== pacman ====
Deletes cached versions of installed and uninstalled packages, except for the most recent 2:
<code>paccache -r -k2</code>

Remove package cache and currently unused sync databases:
<code>pacman -Sc</code>

==== yay ====
Remove cached AUR package and any untracked Files in the cache (caution: this command removes pacman caches as well):
<code>yay -Scc</code>