#!/bin/sh

set -e

BUCKET="$1" ; shift
BATCH_SIZE=100

aws s3api list-object-versions --bucket "$BUCKET" |
jq '[.Versions[] | select(.IsLatest == false) | {Key, VersionId}]' |
jq -c "_nwise($BATCH_SIZE) | {Objects:., Quiet:false}" |
tr '\n' '\0' |
xargs -0 -n1 aws s3api delete-objects --bucket "$BUCKET" --delete