sudo command in Linux with examples
The sudo command in Linux is one of the most important and widely used commands for managing system permissions. It allows you to run a command as the superuser, giving you elevated privileges…
iotop command in Linux w/ examples.
This iotop command guide follows my previous 90 Linux Commands frequently used by Linux Sysadmins article. As time allows, I will continue to publish articles on the 90+ commands geared toward Linux sysadmins…
Diagnosing Swap Usage with smem on Linux
If you’ve ever looked at your server and wondered why it’s using swap even though plenty of RAM is available, you’re not alone. This is a common scenario on Linux systems, and it…
pfSense: Optimizing PHP-FPM for Long-Term Web UI Performance
I’m sharing these PHP-FPM tweaks for pfSense publicly to solicit feedback and help anyone exploring similar optimizations. There may be more efficient methods or edge cases I haven’t covered. I welcome any suggestions,…
10 Best WordPress Remote Backup Plugins and Tools 2025
We all know how important it is to back up our data regularly. Disk drives fail, databases crash, and human error or bad actors can wreak havoc when you least expect it. Hurricanes,…
How I Chose the Best Managed Network Switch for My Home Lab
Recently, I started the process of upgrading my home network to give myself more room to experiment and grow. The first major step was replacing my router with a new firewall appliance, which…
50 Top ‘Internet of Things’ Security Solutions
A couple of months years back, I decided to maintain a list of companies that offer IoT (internet of things) security tools and solutions, which you can find below. Please don’t hesitate to…
100 Top Observability Tools (+ Server Monitoring and APM solutions)
Looking for application monitoring and observability solutions? On this page, I’ve listed the top application performance monitoring (APM), infrastructure monitoring, and observability solutions to date. The listings are updated periodically as APM and…
Linux Updates: Command Line Guide
Updating your Linux system is one of the most important things you can do to keep it secure, stable and running well. With updates, you can patch vulnerabilities, fix bugs and access new…
60 Linux Networking commands and scripts
Recently, I wanted to test network throughput via command line with at least 3 tools. For the life of me, I could not remember iperf. Not being able to remember previously used command…
Learn Linux: 4 Devices to boost your Linux skills (2025)
Ready to go on a journey that will take your Linux skills to the next level and beyond what theoretical learning can? The devices in this article will give you hands-on experience and…
5 Network Devices for work-from-home and Small Business
Over the past few years, we’ve seen a mass migration from the work office to the home office. This continues to increase the requirements for better home network security, capacity, and additional capabilities….
Entrepreneurship: Can You Afford to Put All Your Eggs in One Basket?
Thomas Jefferson said: “Our greatest happiness does not depend on the condition of life in which chance has placed us, but is always the result of a good conscience, good health, occupation, and…
btop – the htop alternative
Have you ever experienced slow application performance on a server and wondered which process was causing the bottleneck? In a production server environment, monitoring system performance and hardware resource usage in real-time is…
Monitoring PHP Performance and Diagnosing Bottlenecks
As one of the most widely used scripting languages for web development, PHP is known for its flexibility and ease of use. However, with complex applications and increasing traffic, PHP performance can sometimes…
rsync Command in Linux with Examples
The rsync command is one of the most popular and powerful tools in Linux for synchronizing files and directories between different locations. It is widely used for backups, remote file transfers, and directory syncing,…
Free vs. Available Memory in Linux
At times, we will need to know precisely how our Linux systems use memory. This article will examine how to use the free command-line utility to view memory usage on a Linux system….
Mastering Linux Administration: 20 Powerful Commands to Know
Linux is a powerful and versatile operating system that can be used for a wide range of purposes. For many system administrators, the command line interface is the primary way to interact with…