Install gnustep-examples by entering the following commands in the terminal:
sudo apt update sudo apt install gnustep-examples
Description:
GNUstep example applications
A collection of examples for the GNUstep libraries. Some of them are useful applications on their own, others are intended only for testing purposes.
Homepage: http://www.gnustep.org/experience/examples.html
Version: 1:1.4.0-2
Section: universe/devel