How To Install jclassinfo on Ubuntu 20.04
Introduction
In this tutorial we learn how to install jclassinfo
on Ubuntu 20.04.
What is jclassinfo
jclassinfo is:
jclassinfo reads Java class files and extract useful information from them, such as:
- the classes/methods/constants/fields provided
- their dependencies
- the version of the virtual machine necessary to run them
- a full disassembly of the bytecode
- other attributes
Its main advantage over other similar programs is that it is written in C, which makes it much faster and more suitable for scripting.
There are three methods to install jclassinfo
on Ubuntu 20.04. We can use apt-get
, apt
and aptitude
. In the following sections we will describe each method. You can choose one of them.
Install jclassinfo Using apt-get
Update apt database with apt-get
using the following command.
sudo apt-get update
After updating apt database, We can install jclassinfo
using apt-get
by running the following command:
sudo apt-get -y install jclassinfo
Install jclassinfo Using apt
Update apt database with apt
using the following command.
sudo apt update
After updating apt database, We can install jclassinfo
using apt
by running the following command:
sudo apt -y install jclassinfo
Install jclassinfo 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 jclassinfo
using aptitude
by running the following command:
sudo aptitude -y install jclassinfo
How To Uninstall jclassinfo on Ubuntu 20.04
To uninstall only the jclassinfo
package we can use the following command:
sudo apt-get remove jclassinfo
Uninstall jclassinfo And Its Dependencies
To uninstall jclassinfo
and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove jclassinfo
Remove jclassinfo Configurations and Data
To remove jclassinfo
configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge jclassinfo
Remove jclassinfo configuration, data, and all of its dependencies
We can use the following command to remove jclassinfo
configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge jclassinfo
References
Summary
In this tutorial we learn how to install jclassinfo
package on Ubuntu 20.04 using different package management tools: apt
, apt-get
and aptitude
.