Linux Tools
Mastering the Shell: A Guide to sed, cat, and echo for Admins
Introduction In the world of system administration, networking, and cybersecurity,...
Fixing Missing Emojis in Debian and Other Linux Distros
Introduction Emoticons—now more commonly known as emojis—first gained mainstream...
Dig Command Cheat Sheet – Mastering DNS Queries Like a Pro
Introduction When it comes to DNS troubleshooting and querying DNS records directly from...
Grep Command Cheat Sheet – Supercharge Your Productivity
Introduction When you’re working with Linux or macOS, the grep command is one of the...
libvirt Networking: How to Create a VM Network with No Host or Internet Access
Creating an Isolated Internal Network for Virtual Machines 💻 Virtualization offers...
libvirt Networking: Beyond the Default NAT
Introduction Just as VirtualBox automatically sets up a default NAT network for its...
DevOps / Automation
Vibe Coding: The Future of Human-Centered Development
Introduction In the fast-moving world of software engineering, new frameworks,...
The Enduring Relevance of Makefiles in Modern DevOps
Introduction A Makefile is a configuration file used by the make build automation tool...
Mastering Infrastructure: A Senior Linux Engineer’s Guide to Configuration Management Tools
Introduction As IT Professionals, we live in a world where infrastructure is constantly...
Samba Server Auto-Setup: Simplify File Sharing on Linux
Setting up a Samba server can be a repetitive and time-consuming task—especially if you...
SCP Command Cheatsheet: Your Complete Guide to Secure File Transfer
Introduction SCP (Secure Copy Protocol) is a network protocol that allows you to...
Understanding POSIX/Linux/macOS Environment Variables
Introduction Environment variables are a foundational concept in POSIX-compliant...
Python Scripting
Linux Firewall: Automatically Ban and Unban IP Addresses with Python
In the world of cybersecurity, quick action can make all the difference. I've just...
Virtualization and Container
Supercharge Your Linux VMs: Enabling Seamless Desktop with SPICE on KVM/QEMU
Introduction So, you're a seasoned Linux admin diving deeper into the world of...
Secure Your Homelab: An OPNsense Configuration Deep Dive
Introduction Welcome back to our OPNsense blog series! If you've been following along,...
Secure Your Homelab: Installing OPNsense as a Virtual Firewall
Introduction Are you tired of the limitations of your consumer-grade router? As your...
libvirt Networking: How to Create a VM Network with No Host or Internet Access
Creating an Isolated Internal Network for Virtual Machines 💻 Virtualization offers...
libvirt Networking: Beyond the Default NAT
Introduction Just as VirtualBox automatically sets up a default NAT network for its...
How to Create a Host-Only Network in Libvirt
Introduction Virtualization is a powerful tool, but configuring the network to meet your...