epijunkie$ cd aws_rds_parameter_groups_utility/
direnv: error .envrc is blocked. Run `direnv allow` to approve its content.
epijunkie$ direnv allow
direnv: loading .envrc
direnv: export +AWS_ACCESS_KEY_ID +AWS_DEFAULT_REGION +AWS_SECRET_ACCESS_KEY
epijunkie$
epijunkie$ ./rds_param_group_util.py -h
usage: rds_param_group_util.py [-h] -a {compare,copy,diff,merge} -p
                               SOURCE_PARAM_GROUP [-s SOURCE_REGION] -d
                               DEST_PARAM_GROUP [-w DEST_REGION]

Cross AWS region capable for any action.

Compares two parameter groups and displays the differences, similar to diff.
OR
Copies a parameter group to a new destination.
OR
Merges parameters differences from the source parameter group to the destination
parameter group. Any parameter that does not exist in the destination is copied.
Any parameter that is different between the two is copied from the source OVER
the destination.

optional arguments:
  -h, --help            show this help message and exit
  -a {compare,copy,diff,merge}, --action {compare,copy,diff,merge}
                        Action to take.
  -p SOURCE_PARAM_GROUP, --parameter-group SOURCE_PARAM_GROUP
                        Source parameter group.
  -s SOURCE_REGION, --source-region SOURCE_REGION
                        Source region of parameter group. Default: us-east-1
  -d DEST_PARAM_GROUP, --dest-parameter-group DEST_PARAM_GROUP
                        Destination parameter group.
  -w DEST_REGION, --dest-region DEST_REGION
                        Destination region of parameter group.
epijunkie$