Apt

How to download a package with apt without installing it?

The apt package manager can be used to download a package file without actually installing it. See how the download subcommand is used to achieve this.

How to see the dependencies of a package with apt?

Learn how to see the dependencies of a package that is to be installed or already installed on the system using the apt package manager.

How to remove a package with apt?

Learn how to remove previously installed packages on a Linux system using the apt package manager, such as Debian and Ubuntu.

How to remove unused packages with apt?

Learn why and how packages may become unnecessary on Linux and how to remove them with the apt package manager on systems like Debian and Ubuntu.

Apt cheat sheet

The cheat sheet for the apt package manager to cover the most used options. Learn how to get more out of the apt command.

Ubuntu system hardening guide for desktops and servers

Step by step guide to secure any Ubuntu desktop or server. Harden your Ubuntu during installation and afterwards with the available security tips.

How to solve an expired key (KEYEXPIRED) with apt

Software updates and package management is easy, until you get a KEYEXPIRED message. In this article we should how it happens and the way to solve it.