If you are using Arch Linux then here are some basic terminal commands, which you can use to control control Pacman (Arch’s package management program).
pacman -S prorgam = install a program.
pacman -R program = remove a program.
pacman -Ss program = search a program from arch repositories.
pacman -Syy = update repository sources.
pacman -Syyu = upgrade packages to new versions.
pacman -Q >> list.txt = view installed packages and save them to list.txt file.
pacman -Rscn = remove leftover packages Note: Use this command only if you are sure you will not need any cached packages.
As Arch is a bleeding edge distribution, and as such constantly moving, always check potential news and warnings from https://www.archlinux.org/ before doing any major system upgrade. With the bleeding edge things can sometimes break down badly.