#!/bin/bash
pid=$(ps aux | 
  grep -E '[0-9] (/usr/bin/)?node .*client.*craco.*scripts/start.js' |
  while read user pid rest; do 
    echo $pid; 
  done)
if [[ "$pid" != "" ]]; then
  echo "Killing ${pid}"
  kill $pid
else
  echo "No node client found"
fi