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This post covers the basics of using the shell in Linux, how to write shell scripts, as well as some information about processes in general. I use the Bash shell so the syntax represented here reflects that. If you use another shell, the syntax might be slightly different, so consult the documentation. I should also point out that while I refer to a system as Linux for simplicity, I am of course talking about GNU/Linux. And this is relevant for BSD users as well!

In this post I am going to talk about the Suckless software tools and how I have integrated them into my workflow and daily use. Suckless tools are interesting because they are a little different from the mainstream in terms of how their software is built, configured, packaged and delivered. Their websites summarizes their mission statement as quality software with a focus on simplicity, clarity, and frugality. Lets dig a little deeper into what makes Suckless software unique.

One important aspect in securing a Linux system is closing any open TCP ports which don't need to be publicly accessible. This reduces the attack surface that the system exposes for malicious actors. In case a service needs to be accessed only locally, a good practice is to bind it on the local loopback IP address (127.0.0.1).