No More One-Off Cron Entries for Single Tasks
Cron & Task Scheduling (Cron/Systemd Timers/At) No More One-Off Cron Entries for Single Tasks 🧩 The Challenge Look, we’ve all been there. You need a command to run *just once*,...
Category: Linux/Unix
In this category, you can see all articles related to Unix or Linux operating System.
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When Your Kernel Upgrades, Don’t Let DKMS Leave You Stranded
Kernel News & Module Management When Your Kernel Upgrades, Don’t Let DKMS Leave You Stranded Technical Briefing | 10/22/2026 You’ve installed a custom kernel module — maybe it’s the NVIDIA...
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Find that zombie process before it ruins your day
Process & Resource Monitoring (Top/Htop/Ps/Systemd) Find that zombie process before it ruins your day 🧩 The Challenge You look at your load average and it’s climbing, but every time you...
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Peek into a container process namespaces without losing your mind
Container Basics On Linux (Namespaces/Cgroups) Peek into a container process namespaces without losing your mind 🧩 The Challenge Trying to figure out what a container is actually seeing on the...
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Stop APT from dragging in recommends you never wanted
Package Management & Distro Internals (Apt/Dnf/Pacman) Stop APT from dragging in recommends you never wanted Technical Briefing | 10/22/2026 You are spinning up a minimal container or a hardened edge...
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Stop struggling with AWK column math on weirdly formatted logs
Text Processing (Grep/Sed/Awk) Stop struggling with AWK column math on weirdly formatted logs 🧩 The Challenge You are trying to sum up the bytes transferred in a legacy application log...
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Cloud-init ignoring your config? It’s probably a datasource squabble.
Cloud-Native Linux (Cloud-Init, Immutable OS, Bootc) Cloud-init ignoring your config? It’s probably a datasource squabble. Technical Briefing | 10/22/2026 You spin up a fresh VM, slap your user-data onto it...
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Ghost files owned by numeric UIDs? Clean ’em up.
User & Group Management Ghost files owned by numeric UIDs? Clean ’em up. 🧩 The Challenge Ever deleted a user, then later you’re looking at a directory and `ls -l`...
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Stop exposing dev ports to the world
SSH & Remote Administration Stop exposing dev ports to the world 🧩 The Challenge Ever spin up some little dev service, maybe a local web app or a database GUI,...
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Your Backup Isn’t a Backup Until You’ve Restored It
Backup, Snapshotting & Disaster Recovery Your Backup Isn’t a Backup Until You’ve Restored It Technical Briefing | 10/21/2026 We all set up backups. Script it, cron it, ship it off...