How To Install unattended-upgrades on Debian 9
Introduction
In this tutorial we learn how to install unattended-upgrades on Debian 9.
What is unattended-upgrades
unattended-upgrades is:
This package can download and install security upgrades automatically and unattended, taking care to only install packages from the configured APT source, and checking for dpkg prompts about configuration file changes.
This script is the backend for the APT::Periodic::Unattended-Upgrade option.
There are three methods to install unattended-upgrades on Debian 9. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install unattended-upgrades Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install unattended-upgrades using apt-get by running the following command:
sudo apt-get -y install unattended-upgrades
Install unattended-upgrades Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install unattended-upgrades using apt by running the following command:
sudo apt -y install unattended-upgrades
Install unattended-upgrades Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install unattended-upgrades using aptitude by running the following command:
sudo aptitude -y install unattended-upgrades
How To Uninstall unattended-upgrades on Debian 9
To uninstall only the unattended-upgrades package we can use the following command:
sudo apt-get remove unattended-upgrades
Uninstall unattended-upgrades And Its Dependencies
To uninstall unattended-upgrades and its dependencies that are no longer needed by Debian 9, we can use the command below:
sudo apt-get -y autoremove unattended-upgrades
Remove unattended-upgrades Configurations and Data
To remove unattended-upgrades configuration and data from Debian 9 we can use the following command:
sudo apt-get -y purge unattended-upgrades
Remove unattended-upgrades configuration, data, and all of its dependencies
We can use the following command to remove unattended-upgrades configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge unattended-upgrades
Dependencies
unattended-upgrades have the following dependencies:
References
Summary
In this tutorial we learn how to install unattended-upgrades package on Debian 9 using different package management tools: apt, apt-get and aptitude.