Two scripts which reset a USB cam whenever a Game is started in Unity

resetcam.sh

#!/bin/bash

set -euo pipefail
IFS=$'\n\t'

VENDOR="05a3"
PRODUCT="9230"

while : ; do

    echo "Waiting for ./restart to appear"
    while : ; do
        [[ -f "./restart" ]] && break
        sleep 1
    done
    rm ./restart

    for DIR in $(find /sys/bus/usb/devices/ -maxdepth 1 -type l); do
    if [[ -f $DIR/idVendor && -f $DIR/idProduct && $(cat $DIR/idVendor) == $VENDOR && $(cat $DIR/idProduct) == $PRODUCT ]]; then
        echo "Now resetting camera " $DIR
        echo 0 > $DIR/authorized
        sleep 0.5
        echo 1 > $DIR/authorized
    fi
    done

    DEV=$(ls -t /dev/vid* | head -1)
    ln -sf $DEV ./camlink
    chmod 777 ./camlink
    echo "New camera file is linked to ./camlink"

done

Startup.cs

  void Awake() {
			StartCoroutine(cameraHack());
	}

	IEnumerator cameraHack() {
		var fileTrigger = "usbhack/restart";
		var fileLink = "usbhack/camlink";
		File.Delete(fileLink);
		if (File.Exists(fileTrigger))
        {
            Debug.Log(fileTrigger+" already exists. Maybe you should run sudo ./usbhack/resetcam.sh &");
            yield return  null;
        } else {
			var sr = File.CreateText(fileTrigger);
			sr.Close();

			while(!File.Exists(fileLink)) {
				yield return new WaitForSeconds(0.1f);
			}
			
			Debug.Log("Ready to access " + fileLink);

			GetComponent<ARController>().StartAR();
		}
	}