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

delete_all_object_versions.sh

#!/bin/bash
STARTD=${PWD}
SELFD=$(cd $(dirname ${0}) >/dev/null 2>&1; pwd)
SELF=$(basename ${0})
SELFN=$(basename ${SELFD})
SELFU=${SELF%.*}
SELFZ=${SELFD}/${SELF}

set -e

bucket=${1}; shift
[ "${bucket}" = 'x' ] && {
        bucket=${1}; shift
        kv=(${1/=/ }); shift
        aws s3api delete-object --bucket ${bucket} --key ${kv[0]} --version-id ${kv[1]}
        exit
}
prefix=${1}; shift

[ "${bucket}" ] || {
        echo >&2 "usage: ${0} bucket [prefix]"
        exit ${LINENO}
}
[ "${prefix}" ] && prefix="--prefix ${prefix}"

echo "Removing all versions from ${bucket}/${prefix}"

echo "removing files"

aws s3api list-object-versions --bucket ${bucket} ${prefix} \
| jq -r '.Versions[] | .Key + " " + .VersionId' \
| parallel -n2 bash ${SELFZ} x ${bucket}

echo "removing delete markers"

aws s3api list-object-versions --bucket ${bucket} ${prefix} \
| jq -r '.DeleteMarkers[] | .Key + " " + .VersionId' \
| parallel -n2 bash ${SELFZ} x ${bucket}