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Escape ‘Dependency Hell’ on Linux with Nix: The Package Manager That Saved Me at 2 AM

By admin April 10, 2026

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.

Centos

Package Management with yum and rpm on CentOS: Install, Remove, and Manage Repositories

By admin March 23, 2026

A practical guide to package management with yum and rpm on CentOS: from installing and removing packages to adding repositories, handling dependencies, and rolling back after updates. Includes real-world experience from production server migrations.

Centos

Saving a server at 2 AM: A detailed guide to DNF Package Manager on RHEL/Rocky Linux

By admin March 19, 2026

At 2 AM, the server reported an error, and DNF was my savior. This article shares practical experience using DNF on RHEL/Rocky Linux, from basic commands to advanced tips, helping you confidently troubleshoot issues.

Fedora

Speed Up DNF on Fedora: Installing and Configuring Plugins for Faster Package Downloads

By admin March 3, 2026

A guide to installing and configuring DNF plugins on Fedora to speed up package downloads: enabling fastestmirror, parallel downloads, deltarpm, and optimizing /etc/dnf/dnf.conf. Ready to apply in under 5 minutes, suitable for both dev machines and servers.