How To Install libjline2-java on Kali Linux

Introduction

In this tutorial we learn how to install libjline2-java on Kali Linux.

What is libjline2-java

libjline2-java is:

JLine is a Java library for handling console input. It is similar in functionality to BSD editline and GNU readline. People familiar with the readline/editline capabilities for modern shells (such as bash and tcsh) will find most of the command editing features of JLine to be familiar.

Jline2 suppors the current features:

• Command history - Lines that have been previously entered may be recalled and edited and can be persisted so that they are available across sessions of your program.
• Line editing - JLine allows full editing of the current command line and attempts to mimic as much of the behavior of GNU Readline as possible, including support for both emacs and vi key mappings.
• Completion - JLine provides a pluggable mechanism for implementing command line tab completion (of course completion can be bound to any key you wish).
• Custom Key bindings - Keys may be arbitrarily remapped to perform a specific action, and JLine attempts to honor any mapping that is set in your existing readline .inputrc file.
• Character Masking - Input may be gathered from the user without any visual feedback. This is useful for prompting for passwords.
• 99.99% Java - The vast portion of JLine is all Java, using only some small bit of native code, provided by the Jansi project, to support Windows.

There are three methods to install libjline2-java 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 libjline2-java Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install libjline2-java using apt-get by running the following command:

sudo apt-get -y install libjline2-java

Install libjline2-java Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install libjline2-java using apt by running the following command:

sudo apt -y install libjline2-java

Install libjline2-java 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 libjline2-java using aptitude by running the following command:

sudo aptitude -y install libjline2-java

How To Uninstall libjline2-java on Kali Linux

To uninstall only the libjline2-java package we can use the following command:

sudo apt-get remove libjline2-java

Uninstall libjline2-java And Its Dependencies

To uninstall libjline2-java and its dependencies that are no longer needed by Kali Linux, we can use the command below:

sudo apt-get -y autoremove libjline2-java

Remove libjline2-java Configurations and Data

To remove libjline2-java configuration and data from Kali Linux we can use the following command:

sudo apt-get -y purge libjline2-java

Remove libjline2-java configuration, data, and all of its dependencies

We can use the following command to remove libjline2-java configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge libjline2-java

Dependencies

libjline2-java have the following dependencies:

• libjansi-java

References

• libjline2-java website

Summary

In this tutorial we learn how to install libjline2-java package on Kali Linux using different package management tools: apt, apt-get and aptitude.