Debian gives you three branches to run, and the one you pick decides whether your next apt upgrade is boring or ruins your morning. Most people pick based on a forum post from years ago. Let's fix that. As of November 2026, stable is Debian 13 "Trixie" (point release 13.7), testing is the future Debian […]

Put a fresh Linux server on a public IP and check the auth log ten minutes later. You will already see it. Failed password for root from 203.0.113.7, then Invalid user oracle, then another, and another. Nobody picked your box. Bots sweep every IPv4 address on the internet around the clock, and they only need […]

Pick the wrong side of UEFI vs Legacy BIOS during an install and nothing warns you. The installer finishes fine, then the box says "no bootable device" the moment the USB stick comes out, or Windows quietly drops off the GRUB menu on a dual boot laptop. It's one firmware setting, and it decides how […]

Pick the wrong tool in a script and you can end up with a nightly job that saves a 404 error page as your backup file, and still reports success. That is the real curl vs wget question. Both download things, sure, but they behave differently the moment something goes wrong, and that difference is […]

Linux 7.3-rc6 landed on Sunday, October 4, and this time the release candidate was refreshingly dull. Half the diff is driver fixes, the commit count sits at what he now calls the "AI normal," and the stable kernel still looks set to land later this month. · Published October 08, 2026 · Updated October 08, […]

Your server almost certainly has an IPv6 address right now, and if your firewall rules only cover IPv4, every service you thought was locked down might be sitting open on the other protocol. That's the real cost of treating IPv6 as "something for later". Here's what actually differs between the two, and how to check, […]

Choosing a web browser on Linux does not have to be difficult. Firefox and Brave are popular choices, but there are several other browsers worth trying. The right one can give you better privacy, a smoother workflow, faster performance, or simply a browser that fits the way you use Linux. In this guide, we look […]

Choosing a Linux desktop environment can make a big difference in how your computer feels and works. Some desktops are feature-rich and highly customizable, while others are lightweight and better suited for older or low-powered machines. One important thing to know is that your Linux distribution and desktop environment are not the same thing. Ubuntu, […]

Get Linux package managers wrong in your head and sooner or later you'll break a server. Usually it's a converted .rpm shoved onto an Ubuntu box, or a sudo pip install that quietly overwrites files apt thinks it owns. The "why so many?" question sounds like trivia. It isn't. The answer tells you what you […]

Deprecated Linux commands are why ifconfig throws "command not found" on a fresh server. Nothing is broken. Those classics were retired, and their replacements, mostly the ip command from iproute2, plus ss, grep -E and systemctl, are already on your system. Modern Replacement Syntax bash LinuxTeck.com COPY ip [OPTIONS] OBJECT { COMMAND | help } […]

AlmaLinux and Rocky Linux are two popular enterprise Linux distributions that provide free, RHEL-compatible alternatives for servers, cloud environments, development, and production workloads. Both were created after Red Hat announced changes to CentOS, which shifted the role of CentOS toward CentOS Stream in 2020. Since then, AlmaLinux and Rocky Linux have developed independently, with differences […]

Every open port on a Linux box is tied to some process holding onto it. When something says "address already in use" or you just need to know what's listening on 8080, you need a way to map that port back to a PID and a program name. This guide walks through exactly how to […]

A practical walkthrough of fuser, lsof, and ss for tracking down and killing whatever is blocking a port Knowing how to free a port in Linux comes down to one thing: finding whatever process is still holding it and telling it to let go. A "port already in use" error usually means an old process […]

Finding the best VPS for AI tools comes down to one thing: whether the server has enough RAM, CPU, and storage to actually run what you install on it. A Linux VPS is a practical alternative to paying for a dedicated AI platform, especially when you want more control over your environment. Tools such as […]

pstree takes the flat, scrolling mess that ps gives you and turns it into an actual tree, showing which process spawned which. Instead of hunting through PIDs and PPIDs by hand, you see the parent-child chain laid out in front of you. pstree Command Syntax LinuxTeck COPY pstree [options] [pid | user] I first reached […]

Many lists of AI tools for Linux focus on browser extensions, desktop applications, or services that simply happen to support Linux. For Linux administrators, developers, and self-hosted environments, the more important questions are whether a tool runs natively on Linux, can be deployed locally, keeps data under your control, and remains useful without depending entirely […]