bmon software package provides portable bandwidth monitor and rate estimator, 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 bmon
bmon is installed in your system.
Make ensure the bmon package were installed using the commands given below,
$ sudo dpkg-query -l | grep bmon *
You will get with bmon package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Network |
| Package | bmon |
| Version | 1:3.9-1 |
| Description | portable bandwidth monitor and rate estimator |
| Sub Section | Net |