How To Install ca-cacert on Debian 9
Introduction
In this tutorial we learn how to install ca-cacert on Debian 9.
What is ca-cacert
ca-cacert is:
This package provides CAcert.org (sub-)root certificates in PEM format. Root certificates allow SSL-based applications to check for the authenticity of certificates issued by the CAcert authority.
CAcert.org is a community-driven Certificate Authority that issues certificates to the public for free.
CAcert’s goal is to promote awareness and education on computer security through the use of encryption, specifically by providing cryptographic certificates. These certificates can be used to digitally sign and encrypt email, authenticate and authorize users connecting to websites and secure data transmission over the internet. Any application that supports the Secure Socket Layer Protocol (SSL or TLS) can make use of certificates signed by CAcert, as can any application that uses X.509 certificates, e.g. for encryption or code signing and document signatures.
Please note that CAcert may not yet comply with RFC 3647 or similar standards.
There are three methods to install ca-cacert 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 ca-cacert Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install ca-cacert using apt-get by running the following command:
sudo apt-get -y install ca-cacert
Install ca-cacert Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install ca-cacert using apt by running the following command:
sudo apt -y install ca-cacert
Install ca-cacert 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 ca-cacert using aptitude by running the following command:
sudo aptitude -y install ca-cacert
How To Uninstall ca-cacert on Debian 9
To uninstall only the ca-cacert package we can use the following command:
sudo apt-get remove ca-cacert
Uninstall ca-cacert And Its Dependencies
To uninstall ca-cacert and its dependencies that are no longer needed by Debian 9, we can use the command below:
sudo apt-get -y autoremove ca-cacert
Remove ca-cacert Configurations and Data
To remove ca-cacert configuration and data from Debian 9 we can use the following command:
sudo apt-get -y purge ca-cacert
Remove ca-cacert configuration, data, and all of its dependencies
We can use the following command to remove ca-cacert configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge ca-cacert
Dependencies
ca-cacert have the following dependencies:
References
Summary
In this tutorial we learn how to install ca-cacert package on Debian 9 using different package management tools: apt, apt-get and aptitude.
