처음에

버킷 생성, 폴더 생성, Put/Get

$ aws s3api create-bucket --bucket my-bucket-2021-0313 --region ap-northeast-1

vi sample.txt

$ aws s3 cp sample.txt s3://my-bucket-2021-0313/

$ aws s3api put-object --bucket my-bucket-2021-0313 --key myfolder/

$ aws s3 ls s3://my-bucket-2021-0313
                           PRE myfolder/
2021-03-13 09:09:19         14 sample.txt

$ aws s3api get-object --bucket my-bucket-2021-0313 --key sample.txt content.txt
{
    "AcceptRanges": "bytes",
    "LastModified": "2021-03-13T09:09:19+00:00",
    "ContentLength": 14,
    "ETag": "\"25dd5dedf3d565b1ac293eabeb2932da\"",
    "ContentType": "text/plain",
    "Metadata": {}
}

$ aws s3 cp s3://my-bucket-2021-0313/myfolder/ ./testdir --recursive
download: s3://my-bucket-2021-0313/myfolder/file2.txt to testdir/file2.txt
download: s3://my-bucket-2021-0313/myfolder/file1.txt to testdir/file1.txt

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