What are goal-based agents?
Aug 14, 2026 / 9 min Read Summarize with: A goal-based agent is an AI agent that makes decisions to achieve a predefined objective. Before taking action, it evaluates the available options and…
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A Collection of Useful WordPress Must-Use (MU) Plugins
If you’ve been building WordPress sites for a while you probably have a folder of code snippets you copy into every new project. I know I do. Mine has been growing for years….
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Linux nameservers and DNS Resolution
DNS resolution on Linux is one of those things that works silently until it doesn’t. Then suddenly you’re staring at “Temporary failure in resolving” errors and wondering why a perfectly healthy server can’t…
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Linux ssh-keygen: Set Up SSH Key Authentication the Right Way
Password-based SSH login is convenient. It’s also one of the fastest ways to get a server compromised. Stand up a VPS with a public IP and password auth left on, then tail the…
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netcat (nc) Command in Linux, with Examples
The nc command, short for netcat, is one of those tools that looks simple at first and keeps surprising you the longer you use it. It reads and writes data across network connections…
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AI agents vs. chatbots: What’s the difference?
Jul 29, 2026 / 8 min Read Summarize with: The difference between AI agents and chatbots comes down to how much they can do on their own. A chatbot handles a conversation or…
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ln Command in Linux: Hard Links vs. Symlinks
The ln command in Linux is one of those tools that looks simple on the surface but trips people up constantly. Hard link or symbolic link? What’s the difference? When does it actually…
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AI content optimization: What it is and how to use it
Jul 08, 2026 / 9 min Read Summarize with: AI content optimization means using AI to improve your existing content’s ranking on Google and to be picked up by answer engines like ChatGPT,…
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Linux Server Health Checks: 10 Metrics Every Sysadmin Should Monitor
Servers give you warnings before they fail. Most sysadmins performing Linux server monitoring miss them because they’re watching the wrong numbers. The metrics that actually matter are one level deeper: iowait instead of…
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My AI Predictions, Two Years Later: The Ones That Landed
In 2023 I published 50 mind-blowing ways AI will reshape our world in 2024. This started as a personal exercise. I wanted to pin down what AI was truly capable of, so I…
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watch Command in Linux: Real-Time Monitoring with Examples
The watch command is one of those tools you use once and immediately wonder how you lived without it. It runs any command repeatedly at a set interval and displays the output full-screen,…
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Nginx tuning tips: HTTPS/TLS – Turbocharge TTFB/Latency
Nginx TLS tuning won’t fix a slow application, but it does cut handshake overhead and improve connection reuse, which shaves milliseconds off every HTTPS request. This guide covers the TLS, HTTP/2, and HTTP/3…
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Linux tmpfs for Speed and Temporary Storage
Some things in Linux are hiding in plain sight. tmpfs is one of them. You use it every day without thinking about it. Every time you use /dev/shm, inspect /run, or work on…
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What are professional email subject lines? Types and examples
Jun 05, 2026 / Bruno S. / 6 min Read Summarize with: Professional email subject lines are short phrases that communicate the purpose of a business email before the recipient opens it. Effective…
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From TECO to Neovim: 50 Years of Text Editing on Unix and Linux
Every so often, something surfaces in the LinuxCommunity.io forums that deserves a wider audience. Generally it is a question, a solved problem, or a quick tip. But occasionally a member shares something that…
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Linux: Guide to useradd, usermod, and groupadd
User and group management is one of those sysadmin fundamentals you touch constantly without always thinking about it. Creating a service account, locking down a shared server, adding a new team member, adjusting…
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PHP-FPM tuning: Using ‘pm static’ for max performance
Let’s take a quick look at how best to set up PHP-FPM for high throughput, low latency, and more stable CPU and memory use. By default, most setups have PHP-FPM’s PM (process manager)…
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Linux Network Bonding: Combine Network Interfaces
Two network interfaces are better than one. With Linux network bonding (also known as NIC bonding or link aggregation), you can combine multiple NICs into a single logical interface, gaining either increased throughput,…
