The pacman package manager is one of the major distinguishing features of Arch Linux. The goal of pacman is to make it possible to easily manager package, whether they are from the official repository or built by user. In this guide we will show you how to use pacman effectively to manager all your packages in your Linux systems. Listing Packages 1. Listing all packages installed in your system $ pacman -Q aalib 1.4rc5-13 accountsservice 0.6.54+2+g204a4ab-1 acl 2.2.53-1 adwaita-icon-theme 3.30.1-1 alsa-lib 1.1.7-2 alsa-utils 1.1.7-1 ... 2. Listing all foreign packages(manually downloaded and installed packages) $ pacman -Qm jmtpfs 0.5-2 ttf-ms-fonts 2.0-10 yaourt 1.9-1 ... 3. List all the packages in the group $ pacman -Sg "your group name" 4. List all packages along with their individual sizes and sort them $ pacman -Qi | awk '/^Name/{name=$3} /^Installed Size/{print $4$5, name}' | sort -h 1024.00B ca-certificates 1024.00B xorg-font-utils 2...