This script allows updating AWS Cloudformation stack by specifiing region, stack name, template body and template parameters.
AWS Cloudformation Stack updater requires Python 2.7+ and was only tested on Ubuntu 14.04 and Mac OS X.
Install boto:
$ sudo pip install boto
Configure:
Refer to this URL: http://boto.readthedocs.org/en/latest/boto_config_tut.html
$ python cf_stack_updater.py --region ap-southeast-2 --stack_name TESTv01 --template_body template.json --template_params parameters.json