A simple command line tool to manage S3 multipart uploads.
$ npm install -g s3-multipart-tool
View all current uploads (either in "successful" progress or those that have failed):
$ s3mp uploads [bucket_name]
Abort all current uploads in the specified bucket:
$ s3mp abort-all [bucket_name]
Abort an upload by key name and upload ID:
$ s3mp abort [bucket_name] [key_name] [upload_id]