#!/bin/sh# Get the mtd device number (mtdX)
findmtd(){m="$(grep -xl "$1" /sys/class/mtd/*/name)"m="${m%/name}"m="${m##*/}"echo"${m}"}pnormtd="$(findmtd pnor)"pnor="${pnormtd#mtd}"pnordev="/dev/mtd${pnor}"if[[ ! "$(dd if=${pnordev}bs=1count=32> /dev/null)"="UBI"]];thenecho"${pnordev} is not formatted UBI"exit1fi