flvstreamer software package provides command-line RTMP client, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install flvstreamer
flvstreamer is installed in your system.
Make ensure the flvstreamer package were installed using the commands given below,
$ sudo dpkg-query -l | grep flvstreamer *
You will get with flvstreamer package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Utilities |
| Package | flvstreamer |
| Version | 2.1c1-1 |
| Description | command-line RTMP client |
| Sub Section | Utils |