Simple script to generate a self-signed certificate for a domain (use *.domain.tld for a wildcard certificate) to be used on webserver (apache2, nginx).

make_selfsigned_ssl_cert

#!/bin/bash
openssl genrsa 2048 > host.key
openssl req -new -x509 -nodes -sha1 -days 3650 -key host.key > host.cert
openssl x509 -noout -fingerprint -text < host.cert > host.info
cat host.cert host.key > host.pem
chmod 400 host.key host.pem

echo ## put on your nginx virtualhost ##
echo ssl on;
echo ssl_certificate      /path/to/host.pem;
echo ssl_certificate_key  /path/to/host.key;