kmigrate.sh

#!/bin/bash

CONFIG=/flash/extlinux/extlinux.conf

if grep -qE "BOOT_IMAGE=" /proc/cmdline; then
  echo "Unable to migrate - this installation is still using the BOOT_IMAGE= parameter"
elif [ -f ${CONFIG} ] && grep -qE "^  LINUX /(Image|zImage)$" ${CONFIG}; then
  mount -o remount,rw /flash
  [ -f /flash/Image ] && mv /flash/Image /flash/KERNEL
  [ -f /flash/zImage ] && mv /flash/zImage /flash/KERNEL
  sed -i 's/\(^  LINUX \/\)\(Image\|zImage\)/\1KERNEL/' ${CONFIG}
  mount -o remount,ro /flash
  echo "Kernel migration successful."
else
  echo "Kernel migration not required."
fi