S3: make a public folder private again?

Question

How do you make an AWS S3 public folder private again?

I was testing out some staging data, so I made the entire folder public within a bucket. I\'d like to restrict it

Answer 1

For AWS CLI, it is fairly straight forward.

If the object is: s3:///file.txt

For single object:

aws s3api put-object-acl --acl private --bucket  --key file.txt

For all objects in the bucket (bash one-liner):

aws s3 ls --recursive s3:// | cut -d' ' -f5- | awk '{print $NF}' | while read line; do
    echo "$line"
    aws s3api put-object-acl --acl private --bucket  --key "$line"
done