Amazon Simple Storage Service
API Reference (API Version 2006-03-01)
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ListBucket

Note

SOAP support over HTTP is deprecated, but it is still available over HTTPS. New Amazon S3 features will not be supported for SOAP. We recommend that you use either the REST API or the AWS SDKs.

The ListBucket operation returns information about some of the items in the bucket.

For a general introduction to the list operation, see the Listing Object Keys.

Requests

This example lists up to 1000 keys in the "quotes" bucket that have the prefix "notes."

Syntax

<ListBucket xmlns="http://doc.s3.amazonaws.com/2006-03-01">
  <Bucket>quotes</Bucket>
  <Prefix>notes/</Prefix>
  <Delimiter>/</Delimiter>
  <MaxKeys>1000</MaxKeys>
  <AWSAccessKeyId>AKIAIOSFODNN7EXAMPLE</AWSAccessKeyId>
  <Timestamp>2006-03-01T12:00:00.183Z</Timestamp>
  <Signature>Iuyz3d3P0aTou39dzbqaEXAMPLE=</Signature>
</ListBucket>
            

Parameters

Name Description Required
prefix

Limits the response to keys which begin with the indicated prefix. You can use prefixes to separate a bucket into different sets of keys in a way similar to how a file system uses folders.

Type: String

Default: None

No
marker

Indicates where in the bucket to begin listing. The list will only include keys that occur lexicographically after marker. This is convenient for pagination: To get the next page of results use the last key of the current page as the marker.

Type: String

Default: None

No
max-keys

The maximum number of keys you'd like to see in the response body. The server might return fewer than this many keys, but will not return more.

Type: String

Default: None

No
delimiter

Causes keys that contain the same string between the prefix and the first occurrence of the delimiter to be rolled up into a single result element in the CommonPrefixes collection. These rolled-up keys are not returned elsewhere in the response.

Type: String

Default: None

No

Success Response

This response assumes the bucket contains the following keys:

notes/todos.txt
notes/2005-05-23/customer_mtg_notes.txt
notes/2005-05-23/phone_notes.txt
notes/2005-05-28/sales_notes.txt

Syntax

<?xml version="1.0" encoding="UTF-8"?>
<ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
  <Name>backups</Name>
  <Prefix>notes/</Prefix>
  <MaxKeys>1000</MaxKeys>
  <Delimiter>/</Delimiter>
  <IsTruncated>false</IsTruncated>
  <Contents>
    <Key>notes/todos.txt</Key>
    <LastModified>2006-01-01T12:00:00.000Z</LastModified>
    <ETag>&quot;828ef3fdfa96f00ad9f27c383fc9ac7f&quot;</ETag>
    <Size>5126</Size>
    <StorageClass>STANDARD</StorageClass>
    <Owner>
      <ID>75aa57f09aa0c8caeab4f8c24e99d10f8e7faeebf76c078efc7c6caea54ba06a</ID>
      <DisplayName>webfile</DisplayName>
    </Owner>
    <StorageClass>STANDARD</StorageClass>
  </Contents>
  <CommonPrefixes>
    <Prefix>notes/2005-05-23/</Prefix>
  </CommonPrefixes>
  <CommonPrefixes>
    <Prefix>notes/2005-05-28/</Prefix>
  </CommonPrefixes>
  </ListBucketResult>

As you can see, many of the fields in the response echo the request parameters. IsTruncated, Contents, and CommonPrefixes are the only response elements that can contain new information.

Response Elements

Name Description
Contents

Metadata about each object returned.

Type: XML metadata

Ancestor: ListBucketResult

CommonPrefixes

A response can contain CommonPrefixes only if you specify a delimiter. When you do, CommonPrefixes contains all (if there are any) keys between Prefix and the next occurrence of the string specified by delimiter. In effect, CommonPrefixes lists keys that act like subdirectories in the directory specified by Prefix. For example, if prefix is notes/ and delimiter is a slash (/), in notes/summer/july, the common prefix is notes/summer/.

Type: String

Ancestor: ListBucketResult

Delimiter

Causes keys that contain the same string between the prefix and the first occurrence of the delimiter to be rolled up into a single result element in the CommonPrefixes collection. These rolled-up keys are not returned elsewhere in the response.

Type: String

Ancestor: ListBucketResult

IsTruncated

Specifies whether (true) or not (false) all of the results were returned. All of the results may not be returned if the number of results exceeds that specified by MaxKeys.

Type: String

Ancestor: boolean

Marker

Indicates where in the bucket to begin listing.

Type: String

Ancestor: ListBucketResult

MaxKeys

The maximum number of keys returned in the response body.

Type: String

Ancestor: ListBucketResult

Name

Name of the bucket.

Type: String

Ancestor: ListBucketResult

Prefix

Keys that begin with the indicated prefix.

Type: String

Ancestor: ListBucketResult

Response Body

For information about the list response, see Listing Keys Response.

Access Control

To list the keys of a bucket you need to have been granted READ access on the bucket.