#!/bin/bash

BUCKET=
PROFILE_OTHER=
PROFILE_MINE=

DATE=$(date +%Y-%m-%dT%H:00:00)

IFS=$'\t'

for KEY in $(aws --profile $PROFILE_MINE s3api list-objects --bucket $BUCKET --query 'Contents[?LastModified>="'$DATE'"][].Key' --output text)
do
  echo $KEY
  # grant access to the account holder
  aws --profile $PROFILE_OTHER s3api put-object-acl --bucket $BUCKET --key "$KEY" --acl bucket-owner-full-control
  # make the object public
  aws --profile $PROFILE_MINE s3api put-object-acl --bucket $BUCKET --key "$KEY" --acl public-read
done