I can run multiple instances of a bash script in the background and everything is great. I have it setup in such way that some have -x as a flag and some not. See:

./test.sh &

./test.sh &

./test.sh -x &

./test.sh -x &

Now, I want to kill all scripts that were run with the -x flag. I always kill scripts running in the background using this:

ps -aux | grep -Po "^S{1,}s*Kd*(?=.*test.sh$)" | 

while read -r level

do

   kill $level

done

However, ps -aux doesn't show any arguments/flags that were given when the script was run. So when using that, I can't only grab the scripts that were run with -x. Is there a solution to this? I want to only kill the background scripts that were run with -x.