Pull info from a ping

GoogleGroups
1

Hi I am new to the BBB and Linux. I am trying to ping a device and pull the round trip time and make an LED come on if it is within a certain time.

For instance if the ping is less than 20ms I want a green light and if it is more than I want a yellow light, if it fails I want a red light. I have used an LED no problem, however I am at a loss for how to extract the ping time.

Is there any command out there that can do this for me?

Thanks!

2

You are going to have to ping the device with either “ping” or “L2Ping” for Bluetooth and then parse the result.

3

A typical linux way to to do this would be to pipe the output of ping into something like sed or awk, read field 7 (as separated by whitespace) then read the value immediately after the “=”. If you look up sed you should find examples.