Delete any ElasticBeanstalk application versions older than a week old that are not currently in use by an environment.

prune_eb_versions.sh

awsargs="--profile aws-dev --region us-east-1"
now=$(date -j -f "%a %b %d %T %Z %Y" "$(date)" "+%s" 2>/dev/null);
oneweekago=$(expr $now - 604800);
aws elasticbeanstalk describe-application-versions $awsargs | \
  jq -r '.ApplicationVersions[] | .ApplicationName + " " + .VersionLabel + " " + .DateCreated'| \
  while read line ; do
    fields=( $line )
    utime=$(date -j -f %Y-%m-%dT%H:%M:%S "${fields[2]};" "+%s" 2>/dev/null);
    if [[ $utime -lt $oneweekago ]]; then
      if [ -n "$(aws elasticbeanstalk describe-environments $awsargs \
                       --application-name ${fields[0]} \
                       --version-label ${fields[1]}) | \
                  jq -r '.Environments[]')" ]; then
        aws elasticbeanstalk delete-application-version $awsargs \
          --application-name "${fields[0]}" \
          --version-label "${fields[1]}"
      fi
    fi
  done

eb labs cleanup-versions now exists