Does the system need to relaod a new kernel

ubuntu-need-reboot.sh

#!/bin/bash
#original idea: http://ubuntuforums.org/archive/index.php/t-1012637.html

installed=$(dpkg --get-selections | grep -e "^linux-image-2\.[0-9]\." | awk '{print $1}' | sort -u | tail -1)
running="linux-image-$(uname -a | awk '{print $3}')"

echo
echo -n 'Reboot needed: '

if [ "$installed" != "$running" ]; then
  echo "YES"
else
  echo "NO"
fi

echo
echo "-- most recent installed kernel: $installed"
echo "-- loaded kernel               : $running"