Check if Steam Link is running on Raspberry Pi 5

Question

I want a script that checks if steam link is running on my raspberry pi 5 with raspberry OS.

Hi all,

I wrote a script that should check if steam link is running. If it runs the script should stop xboxdrv. If steam link is stopped xboxdrv should start again. This is my attempt:

process_string="steamlink"
while true
do
if pgrep -x "$process_sring">/dev/null
 then
 echo "running"
 if pgrep -x "xboxdrv">/dev/null
 then
 echo "stopping xboxdrv"
 pkill -x "xboxdrv"
 fi
 else
 echo "stopped"
 if ! pgrep -x "xboxdrv">/dev/null
 echo "start xboxdrv"
 xboxdrv --detach-kernel-driver --silent --mouse &
 fi
 fi
 sleep 3
done

When I type in firefox as the process string it works. It starts and stops with firefox. I guess I'm using the wrong process name but I can't find anything online. What can I do to make it work?

Thanks in advance for your answers.