operating system Archives – GEANTECHNOLOGY

How to Analyze Linux Logs: A Blue Team’s Practical Guide

Aug 4, 2026 • How To

Every meaningful event on a Linux system leaves a trace somewhere — a failed SSH login, an unexpected sudo command, a firewall drop, a...

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How to Manage Capabilities in Linux: Fine-Grained Privileges Without Full Root

Aug 4, 2026 • How To

Giving an application full root access just so it can do one privileged thing — bind to port 80, capture network packets, change file...

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How to Manage a Firewall on Linux: iptables, firewalld, and What’s Actually Modern in 2026

Aug 4, 2026 • How To

A misconfigured firewall is one of the fastest ways to either get breached or lock yourself out of your own server — sometimes both...

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How to Manage Security & SSH: A Practical Guide for Linux Admins

Aug 3, 2026 • How To

If you administer Linux servers, two topics come up constantly: how to control what processes are actually allowed to do on the system, and...

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How to Manage Backup, Restore, and Compress Files in Linux: A Complete Guide

Aug 3, 2026 • How To

If you run a Linux server — whether it’s hosting a Nextcloud instance, a website, or critical business files — you already know that...

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How to Manage Cron Jobs in Linux: A Complete Sysadmin Guide

Aug 3, 2026 • How To

If you administer Linux servers, sooner or later you need tasks to run themselves — backups at 3 AM, log cleanups every week, disk...

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How to Manage Processes in Linux: A Practical Guide to ps, top, htop, and Kill Signals

Aug 2, 2026 • How To

Every command you run on a Linux machine — from a simple ls to a full database server — becomes a process the moment...

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How to Manage Network in Linux: A Complete Guide to Interfaces, IPs, and Troubleshooting

Aug 2, 2026 • How To

Every Linux administrator eventually runs into the same wall: a server won’t reach the internet, a new interface refuses to come up, or a...

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How to Manage RAID and Encrypt Drives in Linux: A Complete SysAdmin Guide

Aug 2, 2026 • Linux

Every Linux system administrator eventually faces the same two questions: “What happens if a disk dies tonight?” and “What happens if this laptop gets...

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How to Manage Storage on Linux: A Practical Guide to Partitions, LVM, and Disk Health

Aug 1, 2026 • How To

Every Linux system administrator eventually hits the same wall: a disk fills up, a volume needs to grow overnight, or a mystery process is...

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