cfn-format is a command line tool that reads an existing AWS CloudFormation template and outputs a cleanly-formatted, easy-to-read copy of the same template adhering to standards as used in AWS documentation. cfn-format can output either YAML or JSON as desired.
Enable snaps on elementary OS and install cfn-format
Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Enable snapd
Snap can be installed on elementary OS from the command line. Open Terminal from the Applications launcher and type the following:
sudo apt update
sudo apt install snapd
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
Install cfn-format
To install cfn-format, simply use the following command: