Cyber Defence

Install Asterisk on Ubuntu 18.04: Source Build and Secure Config

Asterisk is the most widely deployed open-source PBX (Private Branch Exchange) platform in the world. It powers VoIP gateways, IP PBX…

3 weeks ago

Install Ghost on Ubuntu 18.04: Node.js, MySQL, and Nginx SSL

Ghost is an open-source publishing platform built on Node.js. It is designed for bloggers, journalists, and independent publishers who want a…

3 weeks ago

Install Mattermost on Ubuntu 18.04: Nginx SSL Reverse Proxy Setup

Mattermost is an open-source, self-hosted team messaging platform and a direct alternative to Slack. It is written in Go and React,…

3 weeks ago

Install Ruby on Ubuntu 18.04: apt, Rbenv, and RVM Methods

Ruby is a dynamic, open-source programming language known for its clean, readable syntax. It powers the Ruby on Rails web framework…

3 weeks ago

Install PyCharm on Ubuntu 18.04: Community Edition via Snap

PyCharm is a full-featured Python IDE developed by JetBrains. It includes built-in debugging, embedded Git control, Docker and Vagrant support, Anaconda…

3 weeks ago

Install PHP on Ubuntu 26.04: Apache, Nginx, and Multiple Versions

PHP 8.5 is included in Ubuntu 26.04's default repositories and is the recommended version for new PHP applications. Many popular…

3 weeks ago

Upgrade to Ubuntu 26.04 from 25.10 and 24.04 LTS: Complete Guide

Ubuntu 26.04 LTS "Resolute Raccoon" arrived on April 23, 2026 with Linux kernel 7.0, GNOME 50, Python 3.14, PHP 8.5, Java…

3 weeks ago

Install Kubernetes on Ubuntu 26.04 with kubeadm and containerd

Kubernetes is the standard platform for running containerized workloads across multiple servers with self-healing, rolling updates, and built-in service discovery.…

3 weeks ago

Install Ubuntu 26.04: Bootable USB, Partitioning, and First Steps

Ubuntu 26.04 LTS "Resolute Raccoon" was released on April 23, 2026 with Linux kernel 7.0, GNOME desktop, and standard security support until April 2031. A clean install gives you a known-good starting point on new hardware, when replacing another operating system, or when an upgrade path is not practical. This guide walks through how to install Ubuntu 26.04: downloading and verifying the ISO, writing a bootable USB drive, completing the installer, and doing the initial setup after the first boot. Before you start: You need a USB drive with at least 12 GB of free space. Back up any existing data on the target machine — the installer can erase the entire disk. Install Ubuntu 26.04: Download the ISO and Create a Bootable USB…

3 weeks ago

Change Timezone on Ubuntu: timedatectl and Desktop GUI Guide

The correct timezone affects more than the clock on your screen. It drives cron job scheduling, systemd timer execution, log file timestamps, database record timing, and SSL certificate validity checks. A mismatched timezone can cause scheduled jobs to fire at the wrong hour and make log timestamps impossible to match with real-world events. This guide shows how to change timezone on Ubuntu using the timedatectl command (the recommended approach for servers and remote machines) and through the graphical Date & Time settings on desktop systems. The steps apply to all current Ubuntu releases including 24.04 and 26.04. <strong>Prerequisite:</strong>&nbsp;Only&nbsp;the&nbsp;root&nbsp;user&nbsp;or&nbsp;a&nbsp;user&nbsp;with&nbsp;sudo&nbsp;access&nbsp;can&nbsp;change&nbsp;the&nbsp;system&nbsp;timezone. Check the Current Timezone Before You Change It Run timedatectl with no arguments to see the active timezone and clock status: bashtimedatectl Sample output: Local time: Mon 2026-04-27 08:33:20 UTC…

3 weeks ago