Posted inUbuntu
Deep Cleaning Ubuntu: Purge Junk, Old Kernels, and Free Up GBs of Space
A detailed guide on deep cleaning Ubuntu: remove orphaned packages, purge old kernels, and limit system logs to quickly reclaim GBs of space for your VPS.
Posted inNetwork
DNS Configuration on Linux: Permanently Fix Settings Being Lost After Reboot
Tired of losing DNS settings in /etc/resolv.conf after every reboot? This guide shows you how to properly configure DNS on Linux using Netplan, nmcli, and systemd-resolved for long-term stability.
Posted inLinux
Direnv: The ‘Lifesaver’ for Automating Per-Project Environment Variables on Linux
Manually managing environment variables on Linux often leads to data mix-ups between projects. Learn how to use direnv to automatically load and unload configurations as you switch directories.
Posted inNetwork
Saving Linux Server Wi-Fi via CLI: Mastering nmcli and wpa_supplicant
Lost Ethernet on a Linux Server? A detailed guide on using nmcli and wpa_supplicant to configure Wi-Fi via CLI, plus practical tips for handling routing and metric issues.
Posted inSecurity
Trapping SSH Hackers with Cowrie Honeypot: How I Caught Malware and Watched Intrusion Behavior Live
Honeypots are a proactive way to trap attackers and study intrusion patterns. This article guides you through installing Cowrie on Linux to simulate SSH services, enabling you to collect malware and replay hacker sessions.
Posted inLinux
Hunting Down and Eliminating Zombie Processes: When Linux Servers Are Besieged by the Undead
Zombie processes don't consume RAM but can exhaust PIDs, paralyzing your Linux server. Discover how to track down PPIDs and eliminate these 'undead' processes based on real-world experience.
Posted inNetwork
Linux Security: Implementing DoH and DoT to ‘Stay Hidden’ from ISPs
Don't let ISPs know what you're accessing. A detailed guide on encrypting DNS with DoT and DoH on Linux for total privacy protection.
Posted inFedora
Optimizing zRAM on Fedora: How to ‘Expand’ Your RAM for a Smooth, Lag-Free Experience
Is Fedora lagging with too many tabs open? Discover how to optimize zRAM using zram-generator and zstd to expand your memory and boost system smoothness by over 30%.
Posted inLinux
Escape ‘Dependency Hell’ on Linux with Nix: The Package Manager That Saved Me at 2 AM
Nix Package Manager is a lifesaver for isolating software, supporting instant rollbacks, and completely eliminating library conflict errors on Linux. This guide provides practical installation and usage tips for DevOps and Sysadmins.
Posted inFedora
Managing Multiple Node.js, PHP, and MariaDB Versions: Fedora’s DNF Modularity “Secret Weapon”
Forget nvm or unofficial repos. With DNF Modularity on Fedora, switching between Node.js 18, 20 or PHP 7.4, 8.2 is simpler and safer than ever.