I am trying to uninstall the intellij idea ultimate edition, but when I execute
sudo pacman -Q no package with that name shows up. Do I have to manually uninstall this application?
no package manager (such as
yum) will be able to notice this "installation". The only way to uninstall this program is to delete the files which appeared after you extracted downloaded
Package managers were invented and created to easily manage with your installed programs. Installing software "manually" should be your last option. You are lucky enough to have access to ArchLinux user repository. It has a lot "scripts" to build a package for
pacman. Look for a package there in case you need something which is not in standard ArchLinux package base. Just be careful, since packages form AUR are under less strict control than the standard repository and might do something unexpected.