Linux Archives - Page 4 of 33 - ITFROMZERO

Docker Security: Blocking Malicious Images with Docker Content Trust (DCT)

By IT From Zero September 15, 2026

Don't let your server become a cryptomining farm by pulling suspicious images. Learn to configure Docker Content Trust (DCT) to only run signed containers.

Ubuntu

Fixing Broken Packages and PPA Conflicts on Ubuntu: Deep Debugging with aptitude and ppa-purge

By IT From Zero September 14, 2026

Debugging broken packages on Ubuntu requires more than just running apt --fix-broken install. This guide walks through using aptitude to analyze dependency conflicts in detail and ppa-purge to resolve PPA conflicts, drawn from hands-on experience managing over 20 Ubuntu servers.

Linux

Pool “Surplus” Hard Drives into a Massive NAS with mergerfs on Linux

By IT From Zero September 13, 2026

Stop struggling with scattered hard drives. Learn how to pool drives of different sizes using mergerfs on Linux to create a flexible Home Server storage system.

Network

Microsecond Time Synchronization on Linux with PTP: When NTP is Not Enough

By IT From Zero September 13, 2026

NTP is no longer enough for 5G or HFT systems. Learn how to configure PTP (IEEE 1588) on Linux to achieve microsecond accuracy using linuxptp.

Virtualization

Guide to Deploying Red Hat OpenShift Local (CRC) on Linux: Bringing Enterprise Kubernetes to Your Local Machine

By IT From Zero September 13, 2026

A detailed guide on installing Red Hat OpenShift Local (CRC) on Linux. This article shares experience in resource configuration, KVM optimization, and practical tips for running an Enterprise Kubernetes cluster on your personal machine.

Linux

Mastering tldr-pages: Fast, ‘Instant’ Style Linux Command Lookup

By IT From Zero September 13, 2026

Forget long Man Pages. tldr-pages provides concise, visual, and extremely fast Linux command examples directly in your Terminal.

Artificial Intelligence tutorial - IT technology blog

Build Your Own AI Assistant for Obsidian with Khoj on Linux: Offline, Private, and Free

By IT From Zero September 11, 2026

Transform Obsidian into a personal AI assistant with Khoj on Linux. A detailed guide on installing via Docker and connecting Ollama for secure, offline note retrieval.

Ubuntu

Using debsums to Verify Ubuntu Integrity: Don’t Let Rootkits Nest on Your Server

By IT From Zero September 10, 2026

Don't let your server be compromised without your knowledge. Learn how to use debsums to check Ubuntu system file integrity and detect malware or data errors fast.

Security

DNS Firewall with BIND9 RPZ: Nipping Malware and Phishing in the Bud

By IT From Zero September 9, 2026

A DNS Firewall using BIND9 RPZ blocks up to 92% of malicious connections from malware and phishing. Here is a detailed guide on configuring Sinkholes and managing blacklists.

Centos

CentOS 7 End of Life: How to Revive Yum When the Official Mirrorlist Is Gone

By IT From Zero September 8, 2026

CentOS 7 has officially reached EOL, causing widespread Mirrorlist errors. Learn how to redirect your repos to the Vault archive to fix yum and keep your system running.