Check Internet Upload / Download Speed from command Line on Linux

When you are experiencing slow Internet access, you may want to test the Internet speed of your upstream ISP (often called “last mile” in the residential broadband networks) as part of troubleshooting. For that matter, is probably the most widely used broadband speed testing website.

Underneath it, loads JavaScript code in your web browser, which then automatically detects the closest server from you, and measures download/upload speed by sending HTTP GET and POST requests to the server.

However, if you are trying to check Internet speed from a remote headless server, VPS or an otherwise desktop-less system,’s Flash-based user-friendly interface would be no good. For those of you, there is a command-line interface (CLI) version of, known as speedtest-cli. Here I will demonstrate how to use speedtest-cli to check Internet speed from the command line in Linux.

Install speedtest-cli on Linux

speedtest-cli is a simple CLI client written in Python for measuring bidirectional Internet bandwidth by using infrastructure. It works with Python 2.4-3.4. Installing the latest speedtest-cli is nothing more than downloading the Python script. $ wget
$ chmod a+rx
$ sudo mv /usr/local/bin/speedtest-cli
$ sudo chown root:root /usr/local/bin/speedtest-cli

Test Internet Connection Speed with speedtest-cli

It is straightforward to check your Internet speed with speedtest-cli. Running speedtest-cli command without any argument gets its job done. $ speedtest-cli

This will automatically discover the closest server (in terms of geographic distance), and report download and upload speed measured from the server.

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If you want to share the speed test result, you can use “–share” option, which will allow you to share speed test result with others in an image format via

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The following is a sample image automatically generated and uploaded to by speedtest-cli.

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If you want to get a list of available servers around the world, use “–list” option. It will display a sorted list of servers (geographically closest ones first).

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In the server list shown above, each server shows an associated server ID in front. You can manually specify server ID during testing, instead of using the geographically closest server. For example, if I want to use a sever in Washington DC, I specify a corresponding server ID (e.g., 935). $ speedtest-cli –server 935

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NOTE: Don’t run any aggressive cron job! speedtest-cli is an unofficial third-party tool which is meant for residential users who want to check their broadband speed. You are NOT supposed to run any aggressive script with it. If you want to run automated bandwidth monitoring with speedtest-cli, you should set up your own server with Speedtest Mini, and run any automated test against it, instead of bombarding the’s infrastructure which is shared with many others!

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