Hands-on tutorials, gear guides, and walkthroughs to build your own lab at home — from Raspberry Pi to full server racks
The Commands You’ll Use 100+ Times Daily Before you can manage servers, you need to move around them. Directory navigation is so fundamental that experienced admins don’t think about it—it’s pure muscle memory. That’s exactly where you need to get. When someone asks you to check a log file, you shouldn’t be thinking about how […]
Linux Directory Navigation: Commands You’ll Use Every Day on the Job Read More »
From Homelab Tinkerer to Hired Sysadmin Every infrastructure job posting says “Linux experience required.” But what does that actually mean? Which commands matter? What do interviewers really test? I’ve been on both sides of the technical interview. This series covers the Linux fundamentals that actually get asked – not obscure trivia, but practical command-line skills
Linux Fundamentals: The Homelab to Hired Series Read More »
The Most Powerful Command You’ll Use sudo is the gatekeeper between regular user actions and root-level system changes. Use it correctly, and you maintain security while getting work done. Use it carelessly, and you create vulnerabilities that keep security teams awake at night. Most people know sudo as “the thing you put before commands to
sudo Command Linux Read More »
“Is It the Network?” Every outage starts with this question. Database timeout? Is it the network? Website slow? Is it the network? Application won’t connect? Is it the network? Being able to quickly prove or eliminate network issues is what separates reactive helpdesk work from proactive infrastructure thinking. These commands are your diagnostic toolkit for
Network Troubleshooting Commands Read More »
The Question That Ends Interviews “What does 755 mean?” I’ve seen candidates with impressive CVs stumble on this. They know Linux, they’ve used chmod, but they can’t explain what the numbers actually mean. Interview over. File permissions are the foundation of Linux security. Every file, every directory, every script you run is governed by permissions.
Linux File Permissions: The Interview Question Everyone Gets Wrong Read More »
Linux Package Management Guide for Beginners The Gateway to Linux Administration Every piece of software on your Linux server got there somehow. In the Debian/Ubuntu world—which dominates enterprise Linux deployments—that somehow is apt. Installing packages seems simple until you’re maintaining a production server at 3 AM and an update just broke everything. Understanding apt properly
apt Commands Ubuntu Read More »
Service Management for Junior Sysadmins The Command You’ll Use More Than Any Other In my first week as a junior sysadmin, I probably ran systemctl status about fifty times a day. Application not responding? Check the service. Website down? Check the service. Database timing out? You guessed it—check the service. systemctl is the interface between
Mastering systemctl Read More »
Why This Matters for Your Career I’ve sat on both sides of the technical interview table. As a candidate, I’ve fumbled through command-line questions that should have been easy. As a hiring manager, I’ve watched promising candidates crash and burn because they couldn’t navigate a filesystem under pressure. Here’s what nobody tells you: interviewers aren’t
Linux Commands That Get You Hired Read More »
And Why You Should Try It in Your Homelab with Twingate 👋 The Old Way: VPNs and Big Doors For years, remote access meant one thing: a VPN. You logged in once, and suddenly your laptop could see everything on the network. That worked fine when: • Everyone sat in the same office. • The
🔐 What Is Zero Trust Network Access (ZTNA)? Read More »
We all know that one corner in the house where cables run wild, blinking lights dazzle in the dark, and airflow is barely a thought. For me, that corner was the hallway: where the internet connection enters, access points are fed, Smart Home hubs live, and the rack got dirtier by the week. This week
DIY Lab Rax 10″ 5U: How I Cleaned Up My Homelab & Network Rack Using 3D Printing Read More »
