How To Install libjs-sockjs on Ubuntu 18.04
Introduction
In this tutorial we learn how to install libjs-sockjs on Ubuntu 18.04.
What is libjs-sockjs
libjs-sockjs is:
SockJS is a browser JavaScript library that provides a WebSocket-like object. SockJS gives you a coherent, cross-browser, Javascript API which creates a low latency, full duplex, cross-domain communication channel between the browser and the web server.
Under the hood SockJS tries to use native WebSockets first. If that fails it can use a variety of browser-specific transport protocols and presents them through WebSocket-like abstractions.
SockJS is intended to work for all modern browsers and in environments which don’t support WebSocket protocol, for example behind restrictive corporate proxies.
There are three methods to install libjs-sockjs 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 libjs-sockjs Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install libjs-sockjs using apt-get by running the following command:
sudo apt-get -y install libjs-sockjs
Install libjs-sockjs Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install libjs-sockjs using apt by running the following command:
sudo apt -y install libjs-sockjs
Install libjs-sockjs 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 libjs-sockjs using aptitude by running the following command:
sudo aptitude -y install libjs-sockjs
How To Uninstall libjs-sockjs on Ubuntu 18.04
To uninstall only the libjs-sockjs package we can use the following command:
sudo apt-get remove libjs-sockjs
Uninstall libjs-sockjs And Its Dependencies
To uninstall libjs-sockjs and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove libjs-sockjs
Remove libjs-sockjs Configurations and Data
To remove libjs-sockjs configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge libjs-sockjs
Remove libjs-sockjs configuration, data, and all of its dependencies
We can use the following command to remove libjs-sockjs configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge libjs-sockjs
References
Summary
In this tutorial we learn how to install libjs-sockjs package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
