Ubuntu is a free computer system, like Windows or macOS, but it’s built by a community. It’s great for programmers because it’s very flexible and has lots of tools already built-in that help you code.

Working with the command line can save time, but most of us non-programmers know only a few key commands to use. Using the apropos command, however, ...

How to use the commands manual The key to Terminal wisdom is the man command. It summons manual (or man) pages for almost any command; they’re the equivalent of a help system for the command line.