You want to change an alternative (/etc/alternatives/*) with a GUI
You can install galternatives. This can be done with the following command:
apt-get install galternatives
Galternatives is a graphical setup tool for the alternatives system. You can just start it from the commandline and choose the variables you want to change by just clicking after you delivered the root password which is needed for the change.
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.