Question

I am new to bash and Linux.
I have a program I have written that I want to create multiple simultaneous instances of.

Right now, I do this by opening up 10 new terminals, and then running the program 10 times (the command I run is php /home/calculatedata.php

What is the simplest way to do this using a bash script?
Also, I need to know how to kill the instances because they are running an infinite loop.

Thanks!!

Answer 1

You can use a loop and start the processes in the background with &:

for (( i=0; i<40; i++ )); do
   php /home/calculatedata.php &
done

If these processes are the only instances of PHP you have running and you want to kill them all, the easiest way is killall:

killall php