Vim is a monster of a program, and it isn’t alone. Linux is chock full of incredibly powerful applications like Vim, emacs, sed, awk, or even bash itself. And learning to use any of these tools well requires a lot of time investment.
roff, short for 'run off', is an old-school document formatting language that is readily available for Linux systems in the form of GNU roff (groff). In this article, I discuss how groff works, and how to use it to format simple documents.
In this article, I would like to demonstrate an approach for solving relatively simple programming problems, of the sort you may encounter in a 100-level programming course in college. This technique doesn't scale well to large applications, but it does seem a good approach to teach to new programming students.