Bloggitation

• Packages installation:

  pacman -Sy package_name - packages installation and local packages db sync
  pacman -S package_name - packages installation along with dependencies
  pacman -Sl repository_name - display packages list of a given repository
  pacman -Sv package_name - information about operation
  

• Removing packages:

  pacman -R package_name - removing package without dependencies
  pacman -Rs package_name - removing package along with dependencies
  pacman -Rn package_name - purging package
  

• System update:

  pacman -Su - update all the packages
  pacman -Syu - update all the packages and synchronize local packages database
  

• Database queries:

  pacman -Ss keyword - search for all packages matching the keyword
                                 (where the keyword is a part of the package name)
  pacman -Qi package_name - information about package
  pacman -Ql package_name - list files that a given package consist of
  pacman -Qs package_name - search files installed on hard disk
  

• Other commands:

  pacman -Sw package_name - download package without installation
  pacman -A /file/path/file.tar - install package
  pacman -Sc - clean cache (old files)
  pacman -Scc - clean cache (all files)
  

Original article