How To Install ruby-contracts on Ubuntu 18.04
Introduction
In this tutorial we learn how to install ruby-contracts on Ubuntu 18.04.
What is ruby-contracts
ruby-contracts is:
This library provides contracts for Ruby. Contracts let you clearly express how your code behaves, and free you from writing tons of boilerplate, defensive code.
There are three methods to install ruby-contracts on Ubuntu 18.04. 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-contracts 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-contracts using apt-get by running the following command:
sudo apt-get -y install ruby-contracts
Install ruby-contracts Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install ruby-contracts using apt by running the following command:
sudo apt -y install ruby-contracts
Install ruby-contracts 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-contracts using aptitude by running the following command:
sudo aptitude -y install ruby-contracts
How To Uninstall ruby-contracts on Ubuntu 18.04
To uninstall only the ruby-contracts package we can use the following command:
sudo apt-get remove ruby-contracts
Uninstall ruby-contracts And Its Dependencies
To uninstall ruby-contracts and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove ruby-contracts
Remove ruby-contracts Configurations and Data
To remove ruby-contracts configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge ruby-contracts
Remove ruby-contracts configuration, data, and all of its dependencies
We can use the following command to remove ruby-contracts configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge ruby-contracts
References
Summary
In this tutorial we learn how to install ruby-contracts package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
