um

#!/sbin/sh

echo "" > /sys/devices/platform/usb_mass_storage/lun0/file

LIST=`mount | grep "^/" | grep "type yaffs*\|vfat\|ext*" | grep "system*\|data*\|sd-ext*\|sdcard*" | cut -d\  -f 3 | sort -rn`

if [ "$LIST" != "" ]; then
	for i in $LIST
	do
		echo "unmounting $i"		
		umount $i
			if [ $? != "0" ]; then
				echo "Unable to unmount $i !"
				exit 1
			fi

	done
fi

exit 0