[ -n "$WLAN" ] || WLAN=$(tail -n +3 /proc/net/wireless 2>/dev/null|awk -F: '{print $1}'|sort)
unset LAN_DEVICES WLAN_DEVICES FIREWIRE_DEVICES NETDEVICES
[ -n "$WLAN" ] || WLAN=$(tail -n +3 /proc/net/wireless 2>/dev/null|awk -F: '{print $1}'|sort)
unset LAN_DEVICES WLAN_DEVICES FIREWIRE_DEVICES NETDEVICES