Useful for creating certificates for Microsoft Azure subscriptions management and many other things.

create-x509-cert.sh

#!/bin/bash

if [ -z "$1"] 
then 
	echo "./create.cert <name>"
	echo "please provide name argument"
	exit 1
else
	name=$1
fi

openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout $name.pem -out $name.pem
openssl pkcs12 -export -out $name.pfx -in $name.pem -name "$name"
openssl x509 -inform pem -in $name.pem -outform der -out $name.cer