Mastering the Unix Terminal: Working With Permissions, Networking, and Other Key Concepts

Last time we covered Unix commands, we talked about how you can move around the filesystem from the command line. These ideas are crucial; if you don’t understand the basics of navigating files and folders from the terminal, there’s not a lot you can do on the command line. If you’ve not mastered that, start with this on file-manipulation from the command line. Once that’s under control, you want to understand the commands that change the way files and folders act. In this article we’ll cover the rest of the stuff I regularly do on the command line. We’ll explain permissions on the command line, networking from the terminal, and other concepts that can change your CLI game. This is more a tour of important concepts than a UNIX command list, but I think that’s more valuable. Let’s get to it!
Dealing with User Permissions
User file permissions are one of the first very-foreign concepts many WordPress developers encounter. Rather than the simple act of creating a new PHP or CSS file, this is an extra level of complexity. It requires some understanding of how Unix thinks about user permissions.
The short version is that a computer has many
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