I'm new to Ubuntu and I would like to add a new variable to /etc/environment as part of an installation (as detailed in the question linked below). I have attempted to modify environment by opening it in a text editor (I'm using MobaXterm with MobaTextEditor). However, when I try to save the modified file, the changes aren't saved (when I open the file again, it's back to the unmodified version). I assume that I'd have to use sudo or something similar to open it, but I how do I do this? Or is there another method?
changing /etc/environment did not affect my environment variables
