Apt

APT package management, repositories, and maintenance tasks.

List Installed Packages with apt and dpkg on Debian

May 27, 2026 • 6 min read

How to List Installed Packages on Debian

List installed packages on Debian with apt, dpkg-query, and apt-mark. Includes filtering, installed versions, manual packages, package counts, export lists, and restore commands.

May 5, 2026 • 6 min read

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.

Adding an APT repository on Ubuntu using add-apt-repository

May 2, 2026 • 6 min read

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.

Apr 21, 2026 • 3 min read

How to Uninstall Software Packages on Ubuntu

How to uninstall software packages on Ubuntu using the apt command or Ubuntu Software. Covers remove, purge, autoremove, and snap package removal.

Apr 19, 2026 • 5 min read

apt Command in Linux

The apt command manages packages on Ubuntu, Debian, and related distributions. This guide covers the essential commands for installing, upgrading, removing, and searching packages.

Apr 14, 2026 • 5 min read

How to List Installed Packages on Ubuntu

List, filter, and export installed packages on Ubuntu with apt and dpkg, including how to find package details, manually installed packages, and install history.

List Installed Packages with apt and dpkg on Ubuntu

Mar 23, 2026 • 5 min read

apt vs apt-get: What Is the Difference?

Understand the difference between apt and apt-get in Debian and Ubuntu. When to use each tool, how the commands map to each other, and which one belongs in your scripts.

May 25, 2020 • 4 min read

How to Set up Automatic Updates on Ubuntu 18.04

Regularly updating your Ubuntu system is one of the most important aspects of overall system security. In this tutorial, we will walk through how to install and configure automatic unattended updates on Ubuntu 18.04.

Enable and Set up Automatic Unattended Security Updates on Ubuntu 18.04