Pacman is the package manager for Arch Linux. If you regularly use Debian or Ubun,tu like me, you are probably much more familiar with Apt. If you are new to Arch Linux it may be easier to think of Pacman commands in relation to similar Apt commands. Here is a list of the most common Apt commands (that I can think of at least) and their Pacman equivalents. apt command pacman command apt-get update pacman -Sy apt-get install pacman -S apt-get upgrade pacman -Syu apt-cache search pacman -Ss