curl Command in Linux with Examples
The curl command in Linux is one of those tools that looks simple on the surface but has surprising depth once you start using it regularly. Most people know it as “that command…
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strace: Trace System Calls and Debug Processes on Linux
The strace command in Linux separates the sysadmins who guess from the ones who actually know what’s happening. When a process misbehaves, hangs, eats CPU, or refuses to start, strace shows you exactly…
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Linux Server Setup – Part 1: A Beginner’s Guide
Setting up a Linux server is one of the best ways to learn Linux and server management hands-on. Linux servers offer unmatched flexibility, performance, and control for hosting services, running applications, supporting production…
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sed Command in Linux: with Real Examples
If you’ve spent any time on the Linux command line, you’ve probably seen the sed command used in a one-liner and thought “I should learn that properly.” Most people pick it up piecemeal,…
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Reduce Disk Writes on Debian & Ubuntu (Server & Desktop)
Every write to disk costs something, whether it’s wearing down an SSD, slowing I/O on a busy server, or draining battery on a laptop. One of the biggest offenders is logging. Between systemd-journald,…
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Securing Linux with SELinux (or AppArmor)
SELinux and AppArmor have been around for many years, but are still essential for maintaining a secure Linux environment. This article will cover how to set them up and troubleshoot these mandatory access…
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Ncdu Command in Linux: Disk Usage Analysis with Examples
This article is a follow-up to the previous 90 Linux Commands Frequently Used by Linux Sysadmins post. As time allows, I will continue to publish articles on each of these 90 commands, geared toward…
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Why Your Linux Server “Looks Idle” but “Feels” Slow
Servers can sometimes appear idle yet still perform sluggishly. This scenario is common across web hosting servers, database servers, VPS or cloud instances, or even containerized workloads. In all mainstream Linux distributions, the…
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How to Keep ConfigServer Firewall (CSF) Running After the Shutdown
Update: CSF Project Status (January 2026) – Since the original publication of this article, there have been key developments in how ConfigServer Security & Firewall (CSF) is maintained following the shutdown of Way to…
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What is Linux iowait? (Explained With Examples)
iowait (wait, wa, %iowait, wait%, or I/O wait) is often displayed by command-line Linux system monitoring tools such as top, sar, atop, and others. On its own, it’s one of many performance stats that…
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Choosing a Network Switch – 6 Essential Tips
Choosing a switch can feel deceptively simple, until slow file transfers, port shortages, and similar unexpected upgrade costs remind you otherwise. Before you click “Buy,” it helps to step back and look at…
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Guide to Optimizing PHP for High Traffic Sites
Note: This article serves as an overview and index, connecting you to previous detailed PHP optimization articles. For comprehensive insights on each topic, please follow the provided links to previous articles under the…
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Raspberry Pi Reliability Has a Storage Problem
Raspberry Pi board has earned its reputation as one of the most versatile and capable single-board computers ever made. From home labs, to kiosks and lightweight infrastructure, the hardware itself is rarely the…
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AI in the Workplace: 16 Ways to Stay Ahead in 2026 & Beyond!
As we stand on the brink of 2024, 2025, 2026 AI has already established itself as an essential collaborator in the workplace. The relationship between humans and AI is growing, moving beyond just…
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50 Top Observability and Monitoring Solutions – 2026
“A more targeted list that includes 50 server and observability solutions for 2026” Back in 2014, I compiled a list of top server and application performance monitoring solutions. Sharing that list publicly was a great…
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Free Linux Server Monitoring and APM solutions for SysAdmins
Today’s software applications require developers, testers, and SysAdmins to work together (DevSecOps) more seamlessly than ever before. A single line of code or poorly configured service can negatively impact your application’s performance, causing…
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25 Best CDN Providers 2026
A content delivery network, also referred to as a content distribution network (CDN), is a geographically distributed network of data centers containing proxy servers. CDN providers serve internet content, including web objects (text, graphics, and scripts), downloadable…
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DigitalOcean is chasing me for $0.01: What it taught me about automation
There are three kinds of emails that can ruin a quiet Saturday: a security warning, an outage alert, and, apparently, a repeat reminder that you owe a cloud provider one cent, yes, $0.01….
