How To Install dacs on Ubuntu 20.04

In this tutorial we learn how to install dacs on Ubuntu 20.04. dacs is Distributed Access Control System (DACS)

Introduction

In this tutorial we learn how to install dacs on Ubuntu 20.04.

What is dacs

dacs is:

DACS is a light-weight single sign-on and role-based access control system for web servers and server-based software. It is also an authentication and authorization toolkit for programmers. DACS makes secure resource sharing and remote access via the web easier, safer, and more efficient.

DACS provides:

  • universal, extensible, modular, and efficient authentication methods, including two-factor authentication and hardware tokens
  • powerful, comprehensive, rule-based authorization checking that can be applied selectively and transparently to any resource or activity (such as web services, web content, and program features) by Apache-based web services, CGI programs, servlets, or virtually any program or script
  • secure, web-based single sign-on (SSO)
  • flexible, programmable configuration
  • an Apache 2.0/2.2 module, suite of CGI-based programs, and collection of command line tools

There are three methods to install dacs on Ubuntu 20.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install dacs Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install dacs using apt-get by running the following command:

sudo apt-get -y install dacs

Install dacs Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install dacs using apt by running the following command:

sudo apt -y install dacs

Install dacs 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 Ubuntu. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install dacs using aptitude by running the following command:

sudo aptitude -y install dacs

How To Uninstall dacs on Ubuntu 20.04

To uninstall only the dacs package we can use the following command:

sudo apt-get remove dacs

Uninstall dacs And Its Dependencies

To uninstall dacs and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:

sudo apt-get -y autoremove dacs

Remove dacs Configurations and Data

To remove dacs configuration and data from Ubuntu 20.04 we can use the following command:

sudo apt-get -y purge dacs

Remove dacs configuration, data, and all of its dependencies

We can use the following command to remove dacs configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge dacs

References

Summary

In this tutorial we learn how to install dacs package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.