fractalnow software package provides Fast, advanced fractal generator, 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 fractalnow
fractalnow is installed in your system.
Make ensure the fractalnow package were installed using the commands given below,
$ sudo dpkg-query -l | grep fractalnow *
You will get with fractalnow package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Science |
| Package | fractalnow |
| Version | 0.8.1-1.1 |
| Description | Fast, advanced fractal generator |
| Sub Section | Science |