Tool for running S3 operations against a lot of objects at once.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
Adam Pippin 5e6f93d43a Add example 4 years ago
mass_s3 owner id is not what I expected -- switched to displayname for now 4 years ago Add example 4 years ago


Tool for running an operation on a bunch of objects in an S3 bucket a little more efficiently than some shit-fix bash scripts.

The tool will list and filter the objects in a single thread then fork a handful of processes to make the actual calls to the AWS API.



  • click
  • boto3



mass_s3 put-object-acl [-m modified_since] [-o owner] <bucket> <path> <new_acl>
  • -m modified_since: Specify a date as YYYY-MM-DD, only objects modified on or after this date will be updated.
  • -o owner: Specify an owning account name, only objects owned by this account will be updated.
  • bucket: The S3 bucket to work on
  • path: A path prefix to match objects against
  • new_acl: The new acl set set on the matched objects. The Amazon canned ACLs are: private, public-read, public-read-write, authenticated-read, aws-exec-read, bucket-owner-read, bucket-owner-full-control


mass_s3 put-object-acl -m 2020-03-01 -o other-account-alias my-files 2020/ bucket-owner-full-control