Shows one Parameter, Mapping, Output, or Resource from a CloudFormation template.
This tool is good for digging into one item in a huge CloudFormation template. Use it like so:
cfn-show template-file item-type/item-name
So, to check out a Resource named WebInstance in a file called GreatWebsite.template:
cfn-show GreatWebsite.template Resource/WebInstance
The item will be pretty printed to STDOUT.