Batch restore deleted s3 objects by accident

aws-s3-mass-undelete.sh

# Set the bucket name and date limit that you want to scan for...
#
# For example, if you deleted everything at 9'ish, set the DATE_LIMIT for a 
# few minutes before to ensure you find only the stuff you deleted by error
#
BUCKET_NAME="..."
DATE_LIMIT="0000-00-00T00:00:00.000Z"

aws s3api list-object-versions --bucket "${BUCKET_NAME}" > objects.json
cat objects.json | jq --arg DATE_LIMIT "${DATE_LIMIT}" '[ .DeleteMarkers[] | select(.LastModified > $DATE_LIMIT and .IsLatest) | { file: .Key, version: .VersionId } ]' > markers-to-delete.json
cat markers-to-delete.json | jq --arg BUCKET_NAME "${BUCKET_NAME}" '.[] | "aws s3api delete-object --bucket " + $BUCKET_NAME + " --key " + .file + " --version-id " + .version' -r > undelete.sh
bash undelete.sh