#!/bin/sh
# Copyright (C) 2006-2011 OpenWrt.org
-if ( ! grep -qs '^root::' /etc/shadow || \
- ! grep -qs '^root:[!x]\?:' /etc/passwd ) && \
+if ( ! grep -qsE '^root:[!x]?:' /etc/shadow || \
+ ! grep -qsE '^root:[!x]?:' /etc/passwd ) && \
[ -z "$FAILSAFE" ]
then
echo "Login failed."