How To Install liblog4j2-java on Kali Linux
Introduction
In this tutorial we learn how to install liblog4j2-java on Kali Linux.
What is liblog4j2-java
liblog4j2-java is:
Apache Log4j 2 is an upgrade to Log4j that provides significant improvements over its predecessor, Log4j 1.x:
API Separation: The API for Log4j is separate from the implementation making it clear for application developers which classes and methods they can use while ensuring forward compatibility.
Improved Performance: Log4j 2 contains next-generation Asynchronous Loggers based on the LMAX Disruptor library. In multi-threaded scenarios Asynchronous Loggers have 10 times higher throughput and orders of magnitude lower latency than Log4j 1.x.
Support for multiple APIs: While the Log4j 2 API will provide the best performance, Log4j 2 provides support for the SLF4J and Commons Logging APIs.
Automatic Reloading of Configurations: Log4j 2 can automatically reload its configuration upon modification. It will do so without losing log events while reconfiguration is taking place.
Advanced Filtering: Log4j 2 supports filtering based on context data, markers, regular expressions, and other components in the Log event. Filtering can be specified to apply to all events before being passed to Loggers or as they pass through Appenders.
Plugin Architecture: Log4j uses the plugin pattern to configure components. As such, no code is needed to create and configure an Appender, Layout, Pattern Converter, and so on. Log4j automatically recognizes plugins and uses them when a configuration references them.
Property Support: Properties can be referenced in a configuration, Log4j will directly replace them, or Log4j will pass them to an underlying component that will dynamically resolve them. Properties come from values defined in the configuration file, system properties, environment variables, the ThreadContext Map, and data present in the event.
There are three methods to install liblog4j2-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 liblog4j2-java Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get updateAfter updating apt database, We can install liblog4j2-java using apt-get by running the following command:
sudo apt-get -y install liblog4j2-javaInstall liblog4j2-java Using apt
Update apt database with apt using the following command.
sudo apt updateAfter updating apt database, We can install liblog4j2-java using apt by running the following command:
sudo apt -y install liblog4j2-javaInstall liblog4j2-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 updateAfter updating apt database, We can install liblog4j2-java using aptitude by running the following command:
sudo aptitude -y install liblog4j2-javaHow To Uninstall liblog4j2-java on Kali Linux
To uninstall only the liblog4j2-java package we can use the following command:
sudo apt-get remove liblog4j2-javaUninstall liblog4j2-java And Its Dependencies
To uninstall liblog4j2-java and its dependencies that are no longer needed by Kali Linux, we can use the command below:
sudo apt-get -y autoremove liblog4j2-javaRemove liblog4j2-java Configurations and Data
To remove liblog4j2-java configuration and data from Kali Linux we can use the following command:
sudo apt-get -y purge liblog4j2-javaRemove liblog4j2-java configuration, data, and all of its dependencies
We can use the following command to remove liblog4j2-java configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge liblog4j2-javaDependencies
liblog4j2-java have the following dependencies:
References
Summary
In this tutorial we learn how to install liblog4j2-java package on Kali Linux using different package management tools: apt, apt-get and aptitude.