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

While @Varun Chandak's answer works great, it's worth mentioning that, due to the awk part, the script only accounts for the last part of the ls results. If the filename has spaces in it, awk will get only the last segment of the filename split by spaces, not the entire filename.

Example: A file with a path like folder1/subfolder1/this is my file.txt would result in an entry called just file.txt.

In order to prevent that while still using his script, you'd have to replace $NF in awk {print $NF} by a sequence of variable placeholders that accounts for the number of segments that the 'split by space' operation would result in. Since filenames might have a quite large number of spaces in their names, I've gone with an exaggeration, but to be honest, I think a completely new approach would probably be better to deal with these cases. Here's the updated code:

#!/bin/sh
aws s3 ls --recursive s3://my-bucket-name | awk '{print $4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15,$16,$17,$18,$19,$20,$21,$22,$23,$24,$25}' | while read line; do
    echo "$line"
    aws s3api put-object-acl --acl private --bucket my-bucket-name --key "$line"
done

I should also mention that using cut didn't have any results for me, so I removed it. Credits still go to @Varun Chandak, since he built the script.