How To Install unicorn on Ubuntu 18.04
Introduction
In this tutorial we learn how to install unicorn on Ubuntu 18.04.
What is unicorn
unicorn is:
Unicorn is an HTTP server for Rack applications designed to only serve fast clients on low-latency, high-bandwidth connections and take advantage of features in Unix and Unix-like kernels. Slow clients should only be served by placing a reverse proxy capable of fully buffering both request and response in between Unicorn and slow clients.
There are three methods to install unicorn 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 unicorn Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install unicorn using apt-get by running the following command:
sudo apt-get -y install unicorn
Install unicorn Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install unicorn using apt by running the following command:
sudo apt -y install unicorn
Install unicorn 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 unicorn using aptitude by running the following command:
sudo aptitude -y install unicorn
How To Uninstall unicorn on Ubuntu 18.04
To uninstall only the unicorn package we can use the following command:
sudo apt-get remove unicorn
Uninstall unicorn And Its Dependencies
To uninstall unicorn and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove unicorn
Remove unicorn Configurations and Data
To remove unicorn configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge unicorn
Remove unicorn configuration, data, and all of its dependencies
We can use the following command to remove unicorn configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge unicorn
References
Summary
In this tutorial we learn how to install unicorn package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
