Hi stemsee,
I think it is not necesssary to spawn a new instance of yad ... just send to pipe!
Yes, better.
Also when stopping the test and clearing the data info then I feel that I normally like to scrutinize the data. So now I must watch the test as it happens and process it in real time. Personally I prefer to review it after stopping and clear manually. Maybe the quit button could do the clearing first, before actually quitting, instead of stop test. Maybe a trap function also to clear /tmp/clear.sh ...
I too am not really liking the clear data when stopping, indeed letting the quit button to do the clearing is better, I don't know how yet.
Fred