How To Install libjs-uglify-js on Kali Linux

Introduction

In this tutorial we learn how to install libjs-uglify-js on Kali Linux.

What is libjs-uglify-js

libjs-uglify-js is:

UglifyJS is a JavaScript compressor/minifier written in JavaScript. It also contains tools that allow one to automate working with JavaScript code:

• A parser which produces an abstract syntax tree (AST) from JavaScript code.
• A code generator which outputs JavaScript code from an AST, also providing the option to get a source map.
• A compressor (optimizer) - it uses the transformer API to optimize an AST into a smaller one.
• A mangler - reduce names of local variables to (usually) single-letters.
• A scope analyzer, which is a tool that augments the AST with information about where variables are defined/referenced etc.
• A tree walker - a simple API allowing you to do something on every node in the AST.
• A tree transformer - another API intended to transform the tree.

All the above utilities and APIs are defined in ~6500 lines of code (except for the effective generation of the source-map, which is handled by the source-map module). Compared to alternatives, UglifyJS is pretty small.

This package provides UglifyJS library directly usable in web browsers.

There are three methods to install libjs-uglify-js on Kali Linux. 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-uglify-js 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-uglify-js using apt-get by running the following command:

sudo apt-get -y install libjs-uglify-js

Install libjs-uglify-js Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install libjs-uglify-js using apt by running the following command:

sudo apt -y install libjs-uglify-js

Install libjs-uglify-js Using aptitude

If you want to follow this method, you might need to install aptitude on Kali Linux first since aptitude is usually not installed by default on Kali Linux. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install libjs-uglify-js using aptitude by running the following command:

sudo aptitude -y install libjs-uglify-js

How To Uninstall libjs-uglify-js on Kali Linux

To uninstall only the libjs-uglify-js package we can use the following command:

sudo apt-get remove libjs-uglify-js

Uninstall libjs-uglify-js And Its Dependencies

To uninstall libjs-uglify-js and its dependencies that are no longer needed by Kali Linux, we can use the command below:

sudo apt-get -y autoremove libjs-uglify-js

Remove libjs-uglify-js Configurations and Data

To remove libjs-uglify-js configuration and data from Kali Linux we can use the following command:

sudo apt-get -y purge libjs-uglify-js

Remove libjs-uglify-js configuration, data, and all of its dependencies

We can use the following command to remove libjs-uglify-js configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge libjs-uglify-js

Dependencies

libjs-uglify-js have the following dependencies:

References

• libjs-uglify-js website

Summary

In this tutorial we learn how to install libjs-uglify-js package on Kali Linux using different package management tools: apt, apt-get and aptitude.