#!/bin/sh

set -eu

SCHEDULE="${SCHEDULE:-* * * * *}"
CRON_LOG_LEVEL="${CRON_LOG_LEVEL:-2}"
CRON_FILE="/etc/crontabs/root"

printf '%s /usr/local/bin/nsupdate.sh\n' "${SCHEDULE}" > "${CRON_FILE}"

if [ "$#" -gt 0 ]; then
	if [ "$1" = "crond" ]; then
		shift
		exec crond -l "${CRON_LOG_LEVEL}" "$@"
	fi

	exec "$@"
fi

exec crond -l "${CRON_LOG_LEVEL}" -f