Ubuntu Software Update Failed To Download Package Files. Aptitude command aptitude is a text-based interface to the Debian GNULinux package system including Ubuntu Linux. Update errors are common and plenty in Ubuntu and other Linux distributions based on Ubuntu.
The universe repository consists of free and open source software but Ubuntu doesnt guarantee of regular security updates to software in this category. If you do not know already when you install Ubuntu or any other Linux OS the software sources are set by default to the server mirror near your location. Universe Community-maintained free and open-source software.
How to install and uninstall applications in Ubuntu.
Aptitude command aptitude is a text-based interface to the Debian GNULinux package system including Ubuntu Linux. Open the Terminal application. Fetch package index by running sudo apt update command. Now only update apache2 package by running sudo apt install apache2 command.