The word apropos means “fitting and to the point”. As a command on a Linux system, its role is to identify commands that relate to the particular terms that you are asking about – such as files, lists ...
As much as I tout that users don't have to work with the Linux terminal, I have to admit there are certain things I do from the command line that are far more productive than their GUI counterparts.
With a bit of effort, you can elevate Linux's desktop efficiency. These tips won't cost you a penny and the results can be game-changing. You won't have to be a Linux specialist to use these tips.