Uninstalling and removing an app or package from Ubuntu

 

This article describes removing software from your Ubuntu system that you do not need anymore. We are describing software removal both through the graphical user interface (Ubuntu Software Manager) and the command line-the (Terminal).

Please note that you need administrative privileges in order to install/uninstall software from Ubuntu.

We have run the commands and procedures mentioned in this article on Ubuntu 20.04 LTS.

Uninstall Applications Through Ubuntu Software Manager

One way to uninstall software from your computer is through the Ubuntu Software Manager. Click on the Ubuntu Software icon in the Activities toolbar; this will open the Ubuntu Software manager through which you can search for, install and uninstall software from your computer.

Then click the Installed tab from the following view to list all the applications installed on your Ubuntu system:

From the list of applications, look up for the one you want to uninstall and then click the Remove button against it.

In this example, I am removing a software called XCFA from my system by clicking the Remove button against it. When you try to remove an application, the following type of confirmation message appears:

Click the Remove button when you are sure that you want to remove the selected application. When you do so, the following authentication dialog will appear as only an authorized user can remove an application from Ubuntu:

Enter the password for Administrator or a sudo user and then click the Authenticate button.

The selected software will now be removed from your system.

Uninstall Applications Through the Command Line

You can remove installed software from your system through apt-get remove and apt-get purge commands as sudo. But first, you need to know the exact package name through which you installed the software.

The following command will list all the packages installed on your system:

$ dpkg --list

You may want to copy the exact package name; select it, right click and then copy it from the dpkg list for further use.

Use apt-get remove command

The apt-get remove command removes a software from your system but keeps the configuration files and any plugins and settings that you might have installed later. This helps in keeping the same settings when you want to reinstall the software.

Run the following command as sudo in order to remove a software;

$ sudo apt-get remove package-name

You will be asked the password for sudo and given the information about what will be removed from your system.In this example, I will be removing the OpenJDK package named “openjdk-11-jdk” from my system.

The system will also prompt with a y/n option in order to re-confirm the uninstall procedure. When you click Y, the process will begin and the software will be removed from your system.

Use apt-get purge command

If you want to remove an application completely from your system, also removing any personalized settings, it is best to use the apt-get purge command.

In this example, I will be removing the OpenJDK package named “openjdk-11-jdk:amd64” from my system.

Run the following command as sudo in order to remove a software;

$ sudo apt-get purge package-name

You will be asked the password for sudo and given the information about what will be removed from your system.

The system will also prompt with a y/n option in order to re-confirm the uninstall procedure. When you click Y, the process will begin and the software will be removed from your system.

Bonus: Cleanup the Mess with autoremove

In case you want to remove any dependencies such as the applications and libraries used by the software you once installed that is no longer in use, you can do some housekeeping through the following command:

$ sudo apt-get autoremove

This will list all the obsolete and unused packaged and left over dependencies taking up important space on your system.

The system will also prompt with a y/n option in order to re-confirm the uninstall procedure. When you click Y, the process will begin and the unwanted software dependencies will be removed from your system.

You have learned two ways to uninstall software from your Ubuntu system; through the Ubuntu Software manager and through the command line. Through the command line, you can opt either to remove the software and keep all the configuration files (apt get remove) or completely remove the software (apt-get purge).