fizsh software package provides Friendly Interactive ZSHell, 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 fizsh
fizsh is installed in your system.
Make ensure the fizsh package were installed using the commands given below,
$ sudo dpkg-query -l | grep fizsh *
You will get with fizsh package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Shells |
| Package | fizsh |
| Version | 1.0.7-1 |
| Description | Friendly Interactive ZSHell |
| Sub Section | Shells |