junior-config software package provides Debian Jr. Project common package, 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 junior-config
junior-config is installed in your system.
Make ensure the junior-config package were installed using the commands given below,
$ sudo dpkg-query -l | grep junior-config *
You will get with junior-config package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Miscellaneous |
| Package | junior-config |
| Version | 1.25 |
| Description | Debian Jr. Project common package |
| Sub Section | Miscellaneous |