If you download the ookla-speedtest-1.1.1-linux-armel.tgz file directly into a folder on the router, then you extract and run the program there:
tar -zxvf ookla-speedtest-1.1.1-linux-armel.tgz
If you download the file and extract it on Windows, then copy the files to the router, then you have to set the Unix Execute permission to run the program:
chmod +x ./speedtest
./speedtest -h
1 Like