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sudo apt remove package-name
sudo apt purge package-name
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##all the packages installed on your system
https://vitux.com/how-to-uninstall-programs-from-your-ubuntu-system/
dpkg --list
sudo apt-get remove package-name
or
sudo apt-get purge package-name
or
sudo apt-get autoremove
1> Open the Ubuntu Software Center by clicking on the Ubuntu Software icon in the Activities overview or by searching for Ubuntu Software in the search bar
2> Once the Ubuntu Software Center is open click on the Installed tab to view a list of all the programs installed on your system
3> Find the program you want to uninstall and click on it to open its details page.
4> On the details page you should see an Uninstall button. Click on it to start the uninstall