Today I would like to present to you about the power of command-line interface (CLI), as a better alternative to the graphical user interface (GUI) that everyone uses every day (well, maybe not exactly everyone, we have to subtract people who are too old, too young, in comma, etc., but you know what I mean), by giving you a simple example. This is the first in a series that I tend to write about cli application, and how they will help you become more efficient in your tasks.