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 […]

California's Senate just closed out a fight that Linux maintainers and the EFF have been pushing since February. AB 1856 passed the Senate 39 to 0 on August 26, 2026, and the Assembly signed off on the changes the next day, sending the bill to Governor Newsom's desk with open source carved out of the […]

Accidentally deleted an important file on Linux? Don't panic, but stop using the affected disk as soon as possible. The more data Linux writes to it, the greater the chance that your deleted files will be overwritten and become much harder or impossible to recover. This guide walks you through the recovery process step by […]

LibreWolf vs Firefox comes down to defaults: both are built on the same Firefox codebase, but they make different choices out of the box. Firefox focuses on convenience and broad compatibility, while LibreWolf comes with stronger privacy settings, reduced telemetry, and more restrictive defaults enabled from the start. In this guide, we compare LibreWolf and […]

Choosing between RHEL and Debian for a server depends mainly on your support needs, budget, and how much control you want over the system. RHEL is a strong choice for organizations that need commercial support, long-term stability, and enterprise-focused tools, while Debian is well suited for users who prefer a stable, flexible, and community-supported Linux […]

The best online cron job tools for Linux generally fall into two categories. Category A includes cron expression generators and testers that help you create and verify the correct schedule, such as 0 22 * * *. Category B includes cron monitoring services that check whether your scheduled job actually ran and alert you when […]