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Locking Down Linux: My "Day 0" Server Hardening Checklist

The 15-Minute Nightmare That Changed My Workflow I still remember the sinking feeling I had back in 2017. I had just spun up a cheap $5 VPS to tes…
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Advanced Linux Internals: A Deep Dive For Sysadmins

I still remember the first time I completely bricked a production server because I didn't understand how Linux actually handles file descripto…

Moving Beyond Basics: Real-World Advanced Linux Guide

I still remember the cold sweat dripping down my back the first time I accidentally changed permissions on the entire /var directory to 777 on a …

Advanced Linux in the Real World: Moving Past the Basics

I still remember the exact moment I realized I didn't actually know Linux. It was about 2:00 AM on a Tuesday back in 2015. I was managing a sm…

Moving Past Sudo: A Real Look at Advanced Linux Internals

I still remember the exact moment I realized I didn't actually know Linux. I was a junior sysadmin, about two years into the job, standing in …

Advanced Linux Tips: Moving Beyond the Basics The Hard Way

The day I realized I didn't actually know Linux So there I was, staring at a production server that had just ground to a complete halt. It wa…

Linux Under the Hood: Advanced Concepts for Real Sysadmins

The day the load average hit 400 I still remember staring at a blinking cursor back in 2016, sweating through my shirt while the CTO stood behind …