Can we chmod for a "subdir" under an S3 bucket from an AWS SFTP server?

Question

I have an SFTP server with a couple of users. Their roles allow for read, list, and write but not delete. Once I log into the server, is it possible to do chmod to change permissions of a specific directory? How does that work given the roles and permissions already set in a policy?

Accepted Answer

Chmod would not work with [AWS SFTP back by S3 as it is not POSIX compliant](https://docs.aws.amazon.com/transfer/latest/userguide/create-user.html). You would need to change the [policy for s3 access controls](https://docs.aws.amazon.com/transfer/latest/userguide/users-policies.html). If you were using EFS it would work.

Can we chmod for a "subdir" under an S3 bucket from an AWS SFTP server?

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