To Andy,
Hello, Andy. I see you are a new member in this forum and I'm glad to see
you. For you question, firstly our operating system is GNU/Linux, not only
Linux, as the latter is a component and not the whole operating system.
Secondly, I do not really grasp your wordings, did you mean you were looking
for a lightweight GNU/Linux system to run FreeCAD? If that so, I can say that
Trisquel 9.0 Etiona (yes, I am running 9.0 LiveCD to write this reply) will
work well with your 3GB RAM and even better with the 4GB one and best with
7GB one. If you are learning FreeCAD, I recommend you to make friends with
FreeCAD Forum https://forum.freecadweb.org which is a great community with
thousands of posts already. From this forum, I believe you will be interested
with 'Users Showcase' subforum[1]. Enjoy Trisquel!
[1] Sample screenshot from that subforum:
