source ./vars
NOTE: If you run ./clean-all, I will be doing a rm -rf on /etc/openvpn/easy-rsa/keys
gareth@kitsunet:/etc/openvpn/easy-rsa⟫ sudo ./clean-all
[sudo] password for gareth: 
Sorry, try again.
[sudo] password for gareth: 
Please source the vars script first (i.e. "source ./vars")
Make sure you have edited it to reflect your configuration.