tru
but even if youre using mac/linux you should be a bit cautious
Generally when you are installing software onto a Linux computer, it's from officially maintained repositories. Me and Setro use Arch Linux (and manjaro which is basically the same) which uses a set of repositories called core, extra, community, multilib, and aur. All of these are moderated.
However, if you are using something debian based, there is the possibility that you could get a virus, due to the fact that you must manually add repositories in many cases that are sometimes not from official sources.