List out the region names
ec2-describe-regions
Display Instance Information
ec2-describe-instances –region ap-southeast-1 <instance-id>
Check deleteOnTermination Flag of an Instance
ec2-describe-instance-attribute –region ap-southeast-1 <instance-id> -b -v
Turn Off deleteOnTermination Flag
ec2-modify-instance-attribute –region ap-southeast-1 <instance-id> –block-device-mapping “/dev/sda1=::false”
Reference: http://docs.amazonwebservices.com/AWSEC2/latest/CommandLineReference/OperationList-cmd.html