Yeah, you’re right. I’ve used Arch Linux, and that has a package manager that explicitly prevents you from using
sudo, but I hadn’t used Red Hat and so I wasn’t fully aware of all the options. I did some research and spun up a Fedora Linode to test, and I can confirm that this method works to download Atom. I don’t know 100% that you will be able to run it, because it still relies on external dependencies. But this will get you a compiled Atom in a folder on your computer.
rpm2cpio atom.x86_64.rpm | cpio -idmv
Once it’s done, you can confirm with
./usr/bin/apm, which will pull up the APM help screen. At that point, you can use it directly from where it is, or you can set up a more enjoyable path for you to write out and/or create symbolic links from your user folder (which would work just like desktop shortcuts, except that they would work both from the GUI and the command line).