ec2_ssh.sh: login to an ec2 instance sitting behind an elb Usage: ec2_ssh.sh [elb-tagname] without the elb-tagname, a list of elb-tagnames will be returned. with an elb-tagname, this script will ssh into an ec2 instance behind that elb.
PREREQS:
* add the ssh key you used to bring up the instance to your ssh keys using ssh-add
* set EC2_PRIVATE_KEY to the location of the .pem file that is the general private key of your aws account
* set EC2_CERT to the location of the .pem file that is the general certificate of your aws account