Complete Guide: Securing SSH and Using Private Keys on Linux

Complete guide to securing SSH with private keys, hardening server configuration, and best practices for Linux administrators.

March 4, 2026 · 3 min · GnTech

Change Hostname on Linux (Ubuntu, Debian, CentOS, Fedora, Arch)

Learn how to safely change the hostname on various Linux distributions, including systemd, init-based systems, and special cases like cloud-init and containers.

November 24, 2025 · 3 min · GnTech

How to Change Timezone in Linux (Ubuntu, CentOS, Fedora, Arch)

Step-by-step guide to changing the timezone on various Linux distributions, including systemd and older systems.

November 24, 2025 · 2 min · GnTech