Ubuntu
Ubuntu installation, desktop and server setup, package management, and troubleshooting.
How to Add a User to Sudoers in Ubuntu
Grant sudo privileges in Ubuntu by adding a user to the sudo group or editing the sudoers file. Step-by-step examples and common errors.
Set up PostfixAdmin on Ubuntu 26.04
Set up PostfixAdmin on Ubuntu 26.04 with Nginx, PHP, MySQL, DNS records, and a Let's Encrypt certificate for a virtual mail server.
How to Install Python on Ubuntu 26.04
Install Python on Ubuntu 26.04 using the default Ubuntu packages, the deadsnakes PPA for alternate versions, or a source build. Includes pip and virtual environments.
How to Install Python on Ubuntu 24.04
Install Python on Ubuntu 24.04 using the default Ubuntu packages, the deadsnakes PPA for newer versions, or a source build. Includes pip and virtual environments.
Install deb Files on Ubuntu: apt, dpkg, and gdebi
Install local .deb files on Ubuntu with apt, dpkg, or gdebi. Fix dependency errors, inspect packages, install via GUI, and remove them safely.
How to Install Java on Ubuntu 24.04
Install Java 25, Java 21, and Oracle JDK on Ubuntu 24.04. This guide covers OpenJDK packages, default Java selection, and JAVA_HOME setup.
Initial Server Setup on Ubuntu 26.04
Prepare a new Ubuntu 26.04 server with a sudo user, SSH key authentication, UFW firewall rules, a hostname, timezone settings, and system updates.
How to Add APT Repository in Ubuntu
Add APT repositories in Ubuntu using add-apt-repository, the signed-by method, and PPA. Includes the DEB822 format used by default on Ubuntu 24.04 and 26.04.
Things to Do After Installing Ubuntu 26.04
A practical checklist for setting up Ubuntu 26.04 after installation, including updates, drivers, codecs, Flatpak, backups, firewall settings, and desktop tweaks.
How to Install Ubuntu 26.04
Step-by-step instructions for installing Ubuntu 26.04 from a bootable USB drive, covering ISO download, installer screens, disk setup, and first boot.
How to Install Node.js and npm on Ubuntu 24.04
Install Node.js and npm on Ubuntu 24.04 using the Ubuntu repository, NodeSource, or nvm, with version checks and uninstall steps.
How to Install VirtualBox on Ubuntu 26.04
Install VirtualBox on Ubuntu 26.04 from the Ubuntu multiverse repository, add the Extension Pack, and fix common kernel module or Secure Boot issues.
How to Install TeamViewer on Ubuntu 26.04
Install TeamViewer on Ubuntu 26.04 with the official .deb package, then launch, update, troubleshoot, or remove it from the command line.
How to Install Google Chrome Web Browser on Ubuntu 26.04
Step-by-step instructions for installing Google Chrome on Ubuntu 26.04 with the official .deb package, plus update, default browser, and uninstall steps.
How to Add Swap Space on Ubuntu
This article explains how to add swap space on Ubuntu by creating, enabling, and persisting a swap file.
How to Change Hostname on Ubuntu
This article explains how to set or change the hostname on Ubuntu without restarting the system, using either the command line or GUI.
How To Set or Change Timezone on Ubuntu
This article describes how to set or change the timezone on Ubuntu using the command line or the desktop settings app.
How to Configure Static IP Address on Ubuntu
This guide explains how to set up a static IP address on Ubuntu servers and desktop systems using Netplan or GNOME Settings.
How to Install Apache on Ubuntu 26.04
This tutorial will guide you through the process of installing and managing the Apache web server on Ubuntu 26.04. You will learn how to install Apache, open HTTP and HTTPS ports in the firewall, and set up virtual hosts.
How to Install Java on Ubuntu 26.04
Learn how to install OpenJDK and Oracle JDK on Ubuntu 26.04. Covers Java 26, 25, and other LTS versions.
