Have you wanted to test the internet speed of your server but its a terminal, well you can with speedtest.net they have released an official version of speedtest-cli.
sudo apt-get install gnupg1 apt-transport-https dirmngr
export INSTALL_KEY=379CE192D401AB61
# Ubuntu versions supported: xenial, bionic
# Debian versions supported: jessie, stretch, buster
export DEB_DISTRO=$(lsb_release -sc)
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys $INSTALL_KEY
echo "deb https://ookla.bintray.com/debian ${DEB_DISTRO} main" | sudo tee /etc/apt/sources.list.d/speedtest.list
sudo apt-get update
# Other non-official binaries will conflict with Speedtest CLI
# Example how to remove using apt-get
# sudo apt-get remove speedtest-cli
sudo apt-get install speedtest
See Installation for more details.
Then, from terminal you can launch speedtest using the command speedtest:
Speedtest by Ookla
Server: Vodafone UK - Acton (id = 2789)
ISP: Elite Limited
Latency: 6.75 ms (0.04 ms jitter)
Download: 843.56 Mbps (data used: 1.4 GB)
Upload: 420.58 Mbps (data used: 200.7 MB)
Packet Loss: Not available.
Result URL: https://www.speedtest.net/result/c/7b463f7b-dc6b-4f56-96e9-2d3324224007
lsinclair@rebeladmin:~$
This automatically creates an image and url to share.

Or specify the speedtest server by listing the speedtest server then using the ID. You you can find all the speedtest servers here.
lsinclair@rebeladmin:~$ speedtest -L
Closest servers:
ID Name Location Country
==============================================================================
2789 Vodafone UK Acton Great Britain
11445 Structured Communications London United Kingdom
7352 Redraw Internet London Great Britain
8066 Coreix Ltd London Great Britain
24281 Vodafone UK London United Kingdom
24383 GTT.net London United Kingdom
12920 Trunk Networks London United Kingdom
7437 Vox Telecom London Great Britain
4078 Vorboss Limited London Great Britain
24640 Jump Networks Ltd London United Kingdom
lsinclair@rebeladmin:~$ speedtest --server-id 11445
Speedtest by Ookla
Server: Structured Communications - London (id = 11445)
ISP: Elite Limited
Latency: 5.68 ms (0.23 ms jitter)
Download: 410.34 Mbps (data used: 763.0 MB)
Upload: 416.21 Mbps (data used: 622.3 MB)
Packet Loss: 0.0%
Result URL: https://www.speedtest.net/result/c/7de4eaac-5fff-465f-8acb-198aaa8bd023
lsinclair@rebeladmin:~$
Notice: though, speedtest may not be truth of the speed of your connection as there are other variables at play, but gives you a good idea of what your connection is.