Delete jenkins jobs directories with a lot of old builds

jenkins_jobs_builds_remove.sh

find ${JENKINS_HOME_PATH} -maxdepth 2 -type d -print0 -name "builds" | while read -d '' -r dir; do
    files=("$dir"/*)
    if [ "${#files[@]}" -gt 30 ]; then
    	if [[ "$dir" =~ .*"builds_"$ ]]; then
    	    echo "removing $dir"
    	    rm -rf $dir
    	else
	    	printf "%5d files in directory %s\n" "${#files[@]}" "$dir"
	    	rm -rf "${dir}_"
	    	mv "${dir}" "${dir}_"
	    fi
    fi
done