executing bash loop while command is running

Question

I want to build a bash script that executes a command and in the meanwhile performs other stuff, with the possibility of killing the command if the script is killed. Say, ex

Answer 1

here is the simplest way to do that using ps -p :

[command_1_to_execute] &
pid=$!

while ps -p $pid &>/dev/null; do
    [command_2_to_be_executed meanwhile command_1 is running]
    sleep 10 
done

This will run every 10 seconds the command_2 if the command_1 is still running in background .

hope this will help you :)