[BASH] speed test via CLI w/ no addon

Question

0.00/5 (No votes)

See more:

I'm trying to add a speed test to my BASH script. I know you can install speedtest-cli on the host, but this is not an option. I'm looking for options perhaps using the CURL command.

What I have tried:

I tried using a CURL command to obtain the BPS when transferring a file from Box:

speed_bps=$(curl -Lo /dev/null -skw "%{speed_download}" $DownloadTestURL)
speed_bps=$(printf "%.0f\n" "$speed_bps")

But I'm a bit confused by the BPS - Mbps conversion. For example, my internet speed is ~100M, confirmed by going to http://speedtest.net.

However, the code above yields: 22355.000 (minor differences when running multiple times). No math conversion that I use makes sense in producing the equivalent Mbps.

Posted 16-Jul-21 15:17pm

wifinut

Updated 18-Jul-21 5:30am

v2

Add a Solution

Comments

Richard MacCutchan 17-Jul-21 4:00am

The first thing to ask is what unit is BPS in?

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Daniel Pfeffer · Accepted Answer · 2021-07-18T05:30:00

Solution 1

Working backwards from the numbers that you give, we get 1 block = 100Mb / 22355 = 4473 bits. This looks close to a 4 Kb (i.e. 512 byte) block size. Adding various header and framing bits make the correspondence even better.

I expect that you are reading blocks of 512 bytes from the remote site, and the BPS is given in those units.

Posted 18-Jul-21 5:30am

Daniel Pfeffer

Comments

wifinut 18-Jul-21 23:34pm

Thanks Daniel. I was confused by the conversion method but your explanation made it clearer. 👍