backupninja software package provides lightweight, extensible meta-backup system, 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 backupninja
backupninja is installed in your system.
Make ensure the backupninja package were installed using the commands given below,
$ sudo dpkg-query -l | grep backupninja *
You will get with backupninja package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Administration Utilities |
| Package | backupninja |
| Version | 1.0.1-2 |
| Description | lightweight, extensible meta-backup system |
| Sub Section | admin |