Peace be upon you
In this explanation, we show how to install speedtest on Linux servers, whether VPS or Dedicateda Server
for Ubuntu/Debian Systems
sudo apt-get install gnupg1 apt-transport-https dirmngr
export INSTALL_KEY=379CE192D401AB61
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
sudo apt-get install speedtest
For Fedora/Centos/Redhat Systems
sudo yum install wget
wget https://bintray.com/ookla/rhel/rpm -O bintray-ookla-rhel.repo
sudo mv bintray-ookla-rhel.repo /etc/yum.repos.d/
sudo yum install speedtest
then to test your server speed just write command
speedtest
Thank you