Step 2

[matsu]

While putting this in my bash:
openssl req -new -sha256 -key domain.key -subj "/"
-reqexts SAN -config <(cat /etc/ssl/openssl.cnf
<(printf "[SAN]\nsubjectAltName=DNS:mydomain.com,DNS:www.mydomain.com"))

It throws me an error:

cat: /dev/fd/63: No such file or directory

[Daniel Roesler]

I'm not sure how to help since /dev/fd/63 seems like it's unique to your system.