linux network speed testing

Linux Speedtest Cli

If you're looking to measure your network performance on a Linux system, the Speedtest CLI is an efficient and straightforward tool you should consider. This Python-based command-line utility connects to servers to gauge your internet's upload and download speeds, offering valuable insights into your connection's reliability and performance. Installation is hassle-free with a package manager, ensuring seamless updates and compatibility. By running the Speedtest CLI, you can troubleshoot connectivity issues and optimize your online experience. But how exactly do you interpret and make the most of these test results?

Key Takeaways

  • Install Speedtest CLI using your Linux package manager for better updates and compatibility.
  • Run 'speedtest-cli' in the terminal to measure internet download and upload speeds.
  • Use the '–secure' flag to avoid '403 Forbidden' errors during the speed test.
  • Customize tests with options like `–no-download`, `–no-upload`, and `–timeout` for specific needs.
  • Select a specific server using the `–list` and `–server SERVER_ID` flags for accurate results.

Overview of Speedtest CLI

Speedtest CLI is a Python-based command-line tool that enables you to measure your internet bandwidth accurately using This detailed utility provides you with precise measurements of your upload and download speeds, making it an essential tool for users, developers, and system administrators alike.

By using Speedtest CLI, you can easily assess network performance and optimize internet usage.

With Speedtest CLI, you can connect to the nearest server to conduct speed tests, ensuring that the results are reliable and reflective of your actual internet speed. The tool delivers thorough test results, including your public IP address, server details, ping time, and both download and upload speeds. This extensive data set allows you to evaluate and troubleshoot your network performance effectively.

Installing Speedtest CLI is straightforward, typically done using pip, which simplifies the process and provides quick access to robust internet speed testing capabilities. Once installed, the tool's command-line interface offers an efficient and user-friendly means to run speed tests directly from your terminal.

Installing Speedtest CLI

To install Speedtest CLI on your Linux system, use the package manager by running 'pip install speedtest-cli'.

Verify the installation by executing 'speedtest-cli –version' in your terminal.

If you encounter permission issues, add the '–secure' flag during installation.

Package Manager Installation

Installing the Speedtest CLI on Linux through a package manager is straightforward and guarantees you get the latest updates and compatibility with your distribution. Using package manager commands like `apt`, `yum`, or `dnf`, you can quickly set up Speedtest CLI and make certain it remains updated.

For Debian-based systems like Ubuntu, use the following Linux command:


sudo apt install speedtest-cli


This command will download and install the Speedtest CLI, making it ready for immediate use. If you're running a Fedora system, execute:


sudo dnf install speedtest-cli


Similarly, for systems using `yum`, like CentOS, use:


sudo yum install speedtest-cli


Here's a quick reference table for different distributions:

Distribution Command Package Manager
Ubuntu `sudo apt install speedtest-cli` `apt`
Fedora `sudo dnf install speedtest-cli` `dnf`
CentOS `sudo yum install speedtest-cli` `yum`

Package manager installations make sure you can easily update Speedtest CLI with the same tool, maintaining compatibility with your Linux distribution's package ecosystem. Regular updates through these managers will keep your Speedtest CLI functional and feature-rich.

Manual Installation Steps

When opting for manual installation, you'll need to download the Speedtest CLI binary directly from the official repository. First, navigate to the Speedtest CLI GitHub releases page and choose the appropriate binary for your Linux architecture (i386, x86_64, armel, armhf, or aarch64).

Once you've identified and downloaded the correct binary, open your terminal. If you have a prior version installed, remove it using the command line to avoid conflicts. For example, you might use `sudo apt-get remove speedtest-cli` depending on your previous installation method.

Next, make the downloaded binary executable by running the command `chmod +x speedtest`. Move the executable to a directory in your PATH, typically `/usr/local/bin`, using the command `sudo mv speedtest /usr/local/bin/`.

You can verify the installation by typing `speedtest` in the command line. If everything is set up correctly, the Speedtest CLI should execute and display its usage instructions or run a speed test.

Running a Speed Test

Running a speed test on Linux using the speedtest-cli command involves executing a straightforward terminal command. To initiate the test and measure your download speed, open the terminal and type `speedtest-cli`. This command connects to the nearest server, guaranteeing accurate speed measurements.

When you run the speedtest-cli command, it performs several operations to provide detailed results. The tool first pings the chosen server to measure latency. Following this, it calculates your download speed by transferring data from the server to your machine. The upload speed is measured in a similar fashion, but in reverse.

The test results include critical metrics: download speed, upload speed, ping time, and server details. If the test encounters a 403 Forbidden error, use the secure flag option by typing `speedtest-cli –secure`. This ensures the connection remains encrypted, bypassing potential restrictions.

Executing these steps provides you with precise data on your internet performance. This information is invaluable for troubleshooting connectivity issues or optimizing internet usage for activities like streaming, gaming, or video conferencing. Now, you're equipped to run a speed test and gather essential network performance details.

Analyzing Download Speed

To effectively analyze download speed, you must focus on measurement accuracy, which guarantees dependable data for evaluating your internet performance.

Use the Speedtest CLI command breakdown to understand each component's role in the test process.

Interpreting the speed results will help you identify potential areas for improvement and optimize your overall connection.

Measurement Accuracy Importance

Guaranteeing measurement accuracy is crucial for precisely evaluating download speed and comprehending your internet connection's true performance. When you analyze Internet speeds, particularly download speed, you're evaluating how efficiently data is retrieved from the internet to your system. This is crucial for tasks such as streaming high-definition videos, online gaming, and downloading large files, where any discrepancy can lead to buffering, lag, or prolonged download times.

Measurement accuracy hinges on several factors:

  • Consistency: Make sure that speed tests are conducted under similar conditions to achieve reliable results. This includes testing at different times of the day to account for network traffic variations.
  • Server Selection: Utilize a test server geographically close to your location to minimize latency and obtain a more precise representation of your download speed.
  • Network Load: Perform tests when your network is free from heavy usage to avoid skewed results caused by concurrent activities, impacting your download speed analysis.

Accurate download speed measurements provide valuable insights into the quality of your internet service. This assists in identifying potential network issues and optimizing your setup for better performance. Remember, reliable data is the foundation for informed decisions regarding your internet service and overall online experience.

Speedtest Command Breakdown

Accurately measuring your download speed is essential, and the speedtest CLI command provides a detailed breakdown of this metric to help you understand your internet connection's performance.

The download speed, represented in megabits per second (Mbps), indicates the rate at which data is fetched from the internet to your Linux device. A higher download speed translates to faster loading times for websites, smoother video streaming, and quicker downloads.

When you run the speedtest CLI command, it evaluates the download speed by establishing a connection to a nearby server and measuring how quickly data packets are received. This metric is vital for gauging your internet plan's effectiveness and ensuring it meets your usage requirements. If your download speed is consistently lower than expected, it may indicate network issues or the need for a plan upgrade.

Analyzing the download speed helps you optimize your online experience and troubleshoot connectivity problems. By regularly testing and understanding this metric, you can make informed decisions about your internet service, whether it's selecting the right plan or addressing performance bottlenecks.

Utilizing the speedtest CLI tool in Linux, you gain a clearer picture of your connection's capabilities.

Interpreting Speed Results

Interpreting the download speed results from your speed test allows you to evaluate the true performance of your internet connection. Download speed, measured in megabits per second (Mbps), indicates how quickly data is fetched from the internet to your device. A higher download speed translates to faster loading times for files, videos, and web pages, directly impacting your online experience.

When analyzing your download speed results, consider the following points:

  • Streaming and Gaming:

Faster download speeds guarantee smoother streaming experiences and reduced lag in online gaming. For high-definition streaming, a download speed of at least 5 Mbps is recommended.

  • Large File Downloads:

If you frequently download large files, higher download speeds can notably reduce waiting times. For instance, downloading a 1 GB file will be quicker at 50 Mbps compared to 10 Mbps.

  • Multiple Users:

If multiple devices are connected to your network simultaneously, higher download speeds can uphold consistent performance across all devices.

Analyzing Upload Speed

To analyze upload speed effectively, you need to measure the rate at which your device sends data to the internet server, typically represented in Mbps. Understanding upload speed is important for tasks like sending emails, video conferencing, and uploading files.

When using Speedtest from the Linux CLI, you'll examine how quickly data is transmitted from your device to the server. A higher upload speed guarantees that activities requiring data transfer, like cloud storage and online gaming, are efficient and smooth. Here's a quick reference table for interpreting upload speed results:

Upload Speed (Mbps) Performance Suitable For
0-1 Poor Basic emailing, text-based browsing
1-3 Fair Standard definition video calls
3-10 Good HD video calls, moderate file uploads
10-25 Very Good 4K video uploads, large file transfers
25+ Excellent Seamless video conferencing, large-scale cloud storage

To get accurate measurements, make sure minimal background network activity and, if possible, use a wired connection over Wi-Fi. If the upload speed is lower than expected, consider optimizing your network settings or upgrading your internet plan. Analyzing upload speed helps evaluate your internet connection's efficiency for data-intensive tasks.

Customizing Test Options

Speedtest-cli's customization options let you tailor speed tests to better suit your specific network analysis needs. By leveraging these options, you can control various aspects of the test, guaranteeing that it aligns with your requirements for evaluating download speed and upload speed.

For instance, you might want to focus solely on either download or upload speed. You can achieve this by using the `–no-download` or `–no-upload` options, respectively. This way, you can isolate the performance metrics that matter most to you.

Additionally, you can modify the output format of your test results. Whether you need a simple text summary, CSV format for spreadsheets, or JSON for integration with other tools, Speedtest-cli has you covered. Use options like `–simple`, `–csv`, or `–json` to specify your preferred format.

Here are some key customization options:

  • `–no-download`: Exclude download speed from the test.
  • `–no-upload`: Exclude upload speed from the test.
  • `–timeout [seconds]`: Set a timeout for the test to make sure it doesn't hang indefinitely.

Selecting a Specific Server

Selecting a specific server with Speedtest-cli allows you to fine-tune your speed test results by targeting a server with ideal proximity and load conditions. To achieve this, you'll need to use specific flags and commands.

Start by generating a list of available servers using the `–list` flag. This command will display a detailed list of servers, each associated with a unique server ID.

To specify a server for testing, use the `–server SERVER_ID` flag, replacing `SERVER_ID` with the ID number of your chosen server from the list. Selecting a server that's geographically close to your location and exhibits low latency can greatly enhance the accuracy of your speed test results.

For example, execute the command `speedtest-cli –list` to retrieve the list of servers. Once you identify the best server ID, run `speedtest-cli –server SERVER_ID` to initiate the speed test using that specific server.

This method guarantees that your data traverses the most efficient path, reducing external variables that could skew results.

Formatting Output

After pinpointing the best server, you can enhance your Speedtest-cli experience by formatting the output to suit your needs using various flags and options. These formatting tools allow you to customize how the results are displayed, making it easier to parse, analyze, and integrate with other applications or reporting tools.

To get started, you can use the following flags:

  • `–simple`: Displays a simplified output with basic speed test results, including ping, download, and upload speeds.
  • `–json`: Generates results in JSON format, facilitating easier parsing and integration with other tools or scripts.
  • `–csv`: Outputs the results in CSV format, which is ideal for data analysis and reporting purposes.

For additional customization, you can include options like `–csv-header` to add headers to your CSV output, or `–csv-delimiter` to specify a custom delimiter for CSV format.

If you prefer to see the results in bytes instead of bits, adding the `–bytes` flag will convert the output accordingly.

Sharing Test Results

Sharing your Speedtest-cli results is vital for diagnosing network problems and optimizing internet performance. By providing a thorough overview of your network's health, you can pinpoint issues and seek appropriate solutions.

To share your results effectively, include key metrics such as download speed, upload speed, public IP address, server details, and ping time. The download speed reflects the rate at which data is retrieved from the internet, important for activities like streaming and web browsing.

The upload speed measures how quickly data is transferred to the internet, crucial for tasks such as uploading files and video conferencing.

Execute the Speedtest-cli command and save the output to a file for easy sharing. For example, use `speedtest-cli > speedtest_results.txt` to capture the results. This file will contain all necessary details, including your public IP address and the server used for the test.

Understanding these metrics helps you interpret the test results accurately. High ping times might indicate latency issues, while discrepancies between download and upload speeds might reveal bandwidth limitations.

Sharing detailed and accurate speed test results allows for more effective troubleshooting and optimization of your internet connection.

Frequently Asked Questions

How to Test Speed in Linux Cli?

To test speed in Linux CLI for network troubleshooting, use command alternatives like `speedtest-cli` or `fast`. Install the tool securely, then run `speedtest-cli` for detailed results, including download/upload speeds, ping time, and server details.

How to Run Speedtest Cli?

Think of your network diagnostics like a racecar needing a speed check. Open your command line, type 'speedtest-cli', and hit enter. Your download, upload speeds, and ping time will be measured and displayed accurately.

How to Check Internet Speed in Linux?

To check internet speed in Linux, analyze your network configuration and perform bandwidth monitoring. Utilize tools like speedtest-cli in the terminal for accurate results. This helps optimize your connection for activities like streaming and downloads.

How to Run Speedtest in Ubuntu Cli?

"Knowledge is power." To run a speed test in Ubuntu CLI, install Speedtest CLI using 'sudo apt install speedtest-cli'. Initiate 'speedtest-cli' in the terminal. This provides network performance metrics and bandwidth analysis for your connection.


In the grand tapestry of your Linux toolkit, the Speedtest CLI stands as a beacon of precision and reliability. You've learned to install, run, and interpret network diagnostics with surgical accuracy.

Customizing tests and selecting specific servers are now second nature, letting you tailor results to your exact needs. With this tool, sharing and formatting data becomes a breeze, turning connectivity troubleshooting into a symphony of technical efficiency.

Your network's pulse is now in your hands.

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