concatObjects is an example using the AWS SDK for Go to concatenate two objects together.
We use UploadPartCopy which uses an object for a part. Here in this example we have two parts, or in other words
two objects that we want to concatenate together.
Usage
The example uses the the bucket name provided, two keys for each object, and lastly the output key.
AWS_REGION=<region> go run concatenateObjects.go <bucket> <key for object 1> <key for object 2> <key for output>