How to write a speed test script for Linux?

To create a simple Linux speed test script, you can follow these steps:

1. Create a new shell script file, such as speedtest.sh.
2. Add a shebang (#!/bin/bash) at the beginning of the script file to specify using bash to execute the script.
3. Download a test file, such as speedtest, using the curl or wget command.
4. Use the time command to calculate the time it takes to download the test file, and display the download speed.
5. Additional features can be added, such as testing upload speed and ping latency.

Here is a simple example of a Linux speed test script:

#!/bin/bash

DOWNLOAD_URL="http://speedtest.tele2.net/100MB.zip"

echo "Testing download speed..."

time wget $DOWNLOAD_URL -O /dev/null

echo "Download speed test complete."

You can customize and expand this script according to your own needs and preferences.