speedtest-cli:tldr:cfebf
This command uses the "speedtest-cli" tool to perform a network speed test. The "--server" flag is used to specify a specific server for the test. The "${server_id}" is a placeholder for the ID of the server you want to use.
The "speedtest-cli" tool is a command-line interface for the Speedtest.net service, which allows you to test the download and upload speeds of your internet connection. It uses a network of servers located worldwide to simulate the test and provide accurate results.
When you run this command with the desired server ID, it will initiate a speed test using that specific server. The test will measure the download and upload speeds, as well as other relevant network performance metrics, and display the results in the command-line interface.