There’s an easy way to test your Internet connection speed from the Terminal Command Line.

1. Open Terminal.app (use Spotlight if you don’t know where to find Terminal.app

2. Paste the following command into the command line:

curl -O http://speedtest.wdc01.softlayer.com/downloads/test10.zip > /dev/null

You’ll see the download speed, and average download speed. The output in Terminal will be something like this:

%    Total %   Received % Xferd   Average   Speed  Time    Time        Time      Current
                                  Dload    Upload  Total   Spent       Left      Speed
100  11.0M 100 11.0M    0 0        730k       0   0:00:15  0:00:15     --:--:—   742k

"Average Dload" is the average download speed.

If you'd rather use a pretty interface in your browser, you likely already know about www.speedteest.net