Anyone starting with Linux, any version, would do well to review this article at TechRepublic.com…
Linux has taken over the enterprise. It runs the backbone for many of the largest companies. It’s one of the biggest players in big data. If you’re serious about moving up the IT ladder, at some point, you’re going to have to know Linux.
Source: The first five Linux command-line apps every admin should learn – TechRepublic