Trouble installing "Atom" text editor and setting up sources.list

Currently I’m trying to install this text editor called Atom https://itsfoss.com/install-atom-text-editor-ubuntu-1404-linux-mint-17/.

Click on the above link and you’ll see it tells me to install Atom by

Adding the repo <sudo add-apt-repository ppa:webupd8team/atom>. Here is the result…
http://i.imgur.com/rVd4A5C.png

Update & Install Atom <sudo apt update; sudo apt install atom>. Here is the result…
http://i.imgur.com/1Kqe7Bf.png

I tried navigating to Atoms website and installing the .deb package. When I do this it brings up “Software Center” app and tells me “error AMD not supported”. Any ideas on how I can get Atom installed? Also after adding the repo I go into sources.list and it doesn’t show up not even after updating. Why is that?

Lastly, can someone show me their sources.list file. I don’t think i’m setting mine up correctly.

The Jetson’s architecture is ARMv8-a, not AMD. You’d have to either download the ARMv8-a/aarch64/arm64 version, or download source and compile it yourself (I don’t know if it can be compiled on arm64 or not).