Refer to the documentation, it'll likely be in there. Link to Documentation
You probably could FTP the files to a location, but you'll need SSH to run the installer and start the app.
New to the whole linux system. I am trying to setup SFTP for my server and followed Digital Ocean's doc on the subject however I do not know how to exit from the file I edited.
I tried typing ^X to exit but it didn't work. What am I doing wrong?
Try CTRL + X.
The ^ means Ctrl. So if you've made a change, Ctrl + X, then y to save changes, then enter to save the file name. You may have to edit certain files using sudo, if you get the permission denied on saving. Then that's why.
Thank you all!