How to install that .deb form a .tar file

Eventually you’ll forget.

It’s an idea to go through the README file. Configuration flags exist in those sometimes, but usually cding into the DEBs folder is what’s needed.

at which point typing

might be wise should you decide to do something about your old variable path. From the first code block, the -xvf variables simply mean eXtract, verbose (display action on terminal), and file archieve. Note that installing a program by the DEBs method has a probability of changing a configuration or a path variable somewhere. You will not notice the effect maybe two or four years into the future. It will probably happen when you upgrade your machine to the next major version. Try not to update things during study week or before a big presentation.

Have fun!