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

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

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.