gvrng software package provides Interactive, introductory programming language, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gvrng
gvrng is installed in your system.
Make ensure the gvrng package were installed using the commands given below,
$ sudo dpkg-query -l | grep gvrng *
You will get with gvrng package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Games |
| Package | gvrng |
| Version | 4.4-2 |
| Description | Interactive, introductory programming language |
| Sub Section | Games |