http://{bucket-name}.s3.amazonaws.com/<path-to-file>
s3://test-bucket/test-folder/test-file.txt
http://test-bucket.s3.amazonaws.com/test-folder/test-file.txt
s3cmd put --acl public --guess-mime-type <test_file> s3://test_bucket/test_file
wget http://s3.amazonaws.com/test_bucket/test_file