Oh, I guess I might mention that you can enter that command into a Terminal window (found under Utilities).

The above one-liner works for me on linux, but there may be some differences in the ping output on a Mac. I don't have a mac handy, for testing.

You can obviously replace the google.com, with a URL of your own choosing (perhaps to the ISP, itself). The unit for sleep is seconds, so it'll ping google once every minute.

My output (using a shorter sleep), looks like this: