Move S3 files to another bucket.

from_bucket_policy.json

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "AllowAll",
      "Effect": "Allow",
      "Principal": {
        "AWS": [
          "arn:aws:iam::111122223333:user/iam_role"
        ]
      },
      "Action": [
        "s3:*"
      ],
      "Resource": [
        "arn:aws:s3:::from_bucket",
        "arn:aws:s3:::from_bucket/*"
      ]
    }
  ]
}

iam-policy.json

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "AllowAll",
      "Effect": "Allow",
      "Principal": {
        "AWS": [
          "arn:aws:iam::111122223333:user/iam_role"
        ]
      },
      "Action": [
        "s3:*"
      ],
      "Resource": [
        "arn:aws:s3:::from_bucket",
        "arn:aws:s3:::from_bucket/*"
      ]
    }
  ]
}

instructions.txt

1. CREATE YOUR IAM ROLE, GET AWS KEYS.
2. aws configure
3. aws s3 ls s3://from_bucket | wc -l
4. aws s3 ls s3://to_bucket | wc -l
5. aws s3 sync s3://from_bucket/ s3://to_bucket/ --recursive

# all credits to http://blog.vizuri.com/how-to-copy/move-objects-from-one-s3-bucket-to-another-between-aws-accounts

to_bucket_policy.json

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "s3:ListAllMyBuckets"
      ],
      "Resource": "arn:aws:s3:::*"
    },
    {
      "Effect": "Allow",
      "Action": [
        "s3:GetObject",
        "s3:PutObject"
      ],
      "Resource": [
        "arn:aws:s3:::from_bucket/*",
        "arn:aws:s3:::to_bucket/*"
      ]
    },
    {
      "Effect": "Allow",
      "Action": [
        "s3:ListBucket",
        "s3:GetBucketLocation"
      ],
      "Resource": [
        "arn:aws:s3:::from_bucket",
        "arn:aws:s3:::to_bucket"
      ]
    }
  ]
}