#!/bin/bash
 echo Whats the dns;
 echo example: eulenschutz.de,www.eulenschutz.de
 read varname
 letsencrypt certonly --renew-by-default --email webmaster@linuxweb.net -a manual --manual --preferred-challenges dns -d $varname
 

certbot certonly --manual -d www.xxx.xxx,xxx.xxx

openssl req -x509 -sha256 -new -nodes -key privkey.pem -days 3650 -out rootCACert.pem