Find non-existent services in Symfony app

gistfile1.txt

app/console debug:container | tail -n +8 | head -n-5 | grep -v "alias for" | while read -r LINE; do CLASS=$(echo $LINE | awk '{print $2}'); SERVICE=$(echo $LINE | awk '{print $1}'); if [ -z $CLASS ]; then continue; fi; php -r "require_once 'app/autoload.php'; class_exists('$CLASS') || interface_exists('$CLASS') ?: print('Service $SERVICE ($CLASS) does not exist'.PHP_EOL);"; done