The following command lists all of the active multipart uploads for a bucket named ``my-bucket``:: aws s3api list-multipart-uploads --bucket my-bucket Output:: { "Uploads": [ { "Initiator": { "DisplayName": "username", "ID": "arn:aws:iam::0123456789012:user/username" }, "Initiated": "2015-06-02T18:01:30.000Z", "UploadId": "dfRtDYU0WWCCcH43C3WFbkRONycyCpTJJvxu2i5GYkZljF.Yxwh6XG7WfS2vC4to6HiV6Yjlx.cph0gtNBtJ8P3URCSbB7rjxI5iEwVDmgaXZOGgkk5nVTW16HOQ5l0R", "StorageClass": "STANDARD", "Key": "multipart/01", "Owner": { "DisplayName": "aws-account-name", "ID": "100719349fc3b6dcd7c820a124bf7aecd408092c3d7b51b38494939801fc248b" } } ], "CommonPrefixes": [] } In progress multipart uploads incur storage costs in Amazon S3. Complete or abort an active multipart upload to remove its parts from your account.