The Tux avatars and other images in this repository were not created by It's FOSS. It was originally created by a designer/developer (we don't know his/her name) who had out them on a website called Linux Pictures.
all images are distributed under idgaf license. it means that you can use provided designs for any noncommercial purposes like creation of handout materials for conferences and meet-ups, printing wall posters for home and office and so on, but if you violate the license we will most probably do nothing, because we don't give a fuck.