How To Install ruby-qr4r on Ubuntu 20.04
Introduction
In this tutorial we learn how to install ruby-qr4r on Ubuntu 20.04.
What is ruby-qr4r
ruby-qr4r is:
This Ruby library provides a generator of QR codes in the PNG format.
It relies on ImageMagick and the rqrcode to produce its output. Ruby-Versions: all
There are three methods to install ruby-qr4r 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 ruby-qr4r Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install ruby-qr4r using apt-get by running the following command:
sudo apt-get -y install ruby-qr4r
Install ruby-qr4r Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install ruby-qr4r using apt by running the following command:
sudo apt -y install ruby-qr4r
Install ruby-qr4r 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 ruby-qr4r using aptitude by running the following command:
sudo aptitude -y install ruby-qr4r
How To Uninstall ruby-qr4r on Ubuntu 20.04
To uninstall only the ruby-qr4r package we can use the following command:
sudo apt-get remove ruby-qr4r
Uninstall ruby-qr4r And Its Dependencies
To uninstall ruby-qr4r and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove ruby-qr4r
Remove ruby-qr4r Configurations and Data
To remove ruby-qr4r configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge ruby-qr4r
Remove ruby-qr4r configuration, data, and all of its dependencies
We can use the following command to remove ruby-qr4r configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge ruby-qr4r
References
Summary
In this tutorial we learn how to install ruby-qr4r package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.
