Delete all versions of all files in s3 versioned bucket using AWS CLI and jq.

delete_all_object_versions.sh

#!/bin/bash

bucket=$1

set -e

echo "Removing all versions from $bucket"

versions=`aws s3api list-object-versions --bucket $bucket |jq '.Versions'`
markers=`aws s3api list-object-versions --bucket $bucket |jq '.DeleteMarkers'`
let count=`echo $versions |jq 'length'`-1

if [ $count -gt -1 ]; then
        echo "removing files"
        for i in $(seq 0 $count); do
                key=`echo $versions | jq .[$i].Key |sed -e 's/\"//g'`
                versionId=`echo $versions | jq .[$i].VersionId |sed -e 's/\"//g'`
                cmd="aws s3api delete-object --bucket $bucket --key $key --version-id $versionId"
                echo $cmd
                $cmd
        done
fi

let count=`echo $markers |jq 'length'`-1

if [ $count -gt -1 ]; then
        echo "removing delete markers"

        for i in $(seq 0 $count); do
                key=`echo $markers | jq .[$i].Key |sed -e 's/\"//g'`
                versionId=`echo $markers | jq .[$i].VersionId |sed -e 's/\"//g'`
                cmd="aws s3api delete-object --bucket $bucket --key $key --version-id $versionId"
                echo $cmd
                $cmd
        done
fi

you can use jq -r flag to remove quotation chars " from query results instead of sed btw

for some bizarre reason, this line does not work for me:
version_id="$(jq --raw-output ".[${index}].VersionId" <<< "$1")"