How to create certificates in a single line

complete as follows
/C= Country Name (2 letter code)
/ST= State or Province Name (full name)
/L= Locality Name
/O= Organization Name
/OU= Organizational Unit Name
/CN=website.com

openssl req -new -newkey rsa:4096 -days 2 -nodes -x509 -subj "/C=SP/ST=Madrid/L=Madrid/O=Empresa/OU=Internet Services/CN=website.com" -keyout server.key  -out server.cert

view example in github