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[ aws . s3api ]

get-bucket-policy

Description

Returns the policy of a specified bucket.

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.

Synopsis

  get-bucket-policy
--bucket <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Options

--bucket (string)

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See 'aws help' for descriptions of global parameters.

Examples

The following command retrieves the bucket policy for a bucket named my-bucket:

aws s3api get-bucket-policy --bucket my-bucket

Output:

{
    "Policy": "{\"Version\":\"2008-10-17\",\"Statement\":[{\"Sid\":\"\",\"Effect\":\"Allow\",\"Principal\":\"*\",\"Action\":\"s3:GetObject\",\"Resource\":\"arn:aws:s3:::my-bucket/*\"},{\"Sid\":\"\",\"Effect\":\"Deny\",\"Principal\":\"*\",\"Action\":\"s3:GetObject\",\"Resource\":\"arn:aws:s3:::my-bucket/secret/*\"}]}"
}

Get and put a bucket policy

The following example shows how you can download an Amazon S3 bucket policy, make modifications to the file, and then use put-bucket-policy to apply the modified bucket policy. To download the bucket policy to a file, you can run:

aws s3api get-bucket-policy --bucket mybucket --query Policy --output text > policy.json

You can then modify the policy.json file as needed. Finally you can apply this modified policy back to the S3 bucket by running:

aws s3api put-bucket-policy --bucket mybucket --policy file://policy.json

Output

Policy -> (string)

The bucket policy as a JSON document.