You can use the speedtest cli from command-line,using the following commands

Use the speedtest-cli executable file to view the basic information about your internet connection

./speedtest-cli

To share your test result in speedtest.net

./speedtest-cli --share

To view the total list of speedtest servers, use the following command.

./speedtest-cli --list

To check the internet speed for a specific server.

./speedtest-cli --server 1858

To know about the other options in speedtest-cli,use

./speedtest-cli --help