The command line can feel a bit like a step backwards in terms of user experience, or even intimidating. However, it can be a very powerful tool, and even impossible to avoid if you want to program or be involved in IT.
What is it?
Probably the most recognizable image of the command line is that black box on the screen with green text. Basically it is a place to interact with your computer via text rather than photos (mostly). You’ll need an application called a “terminal” or “terminal emulator” to get started. Also, you will need to select a shell. Think of it as what interprets the text you type, and the terminal displays it. Each operating system has it’s own default shell, but for the most part you have at least a few alternatives. There are plenty of articles written on the subject. So, we are just going to look at some high level concepts. In general a command entered into the terminal is broken into 3 parts.
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