`aws s3api get-public-access-block --bucket`

aws s3api get-public-access-block --bucket <bucket>

Risk: Safe

What it does

Shows the four Block Public Access locks of a bucket.

When to use it

To make sure nothing can go public. All four should say true.

Example

$ aws s3api get-public-access-block --bucket amzn-s3-demo-bucket

Read the four locks.

$ aws s3api put-public-access-block --bucket amzn-s3-demo-bucket --public-access-block-configuration "BlockPublicAcls=true,IgnorePublicAcls=true,BlockPublicPolicy=true,RestrictPublicBuckets=true"

Turn all four locks on.

Learn it in: S3 buckets and Block Public Access · Official docs