cavsfan@cavsfan-le-beast:~$ cat /etc/apt/apt.conf.d/01autoremove-kernels
// DO NOT EDIT! File autogenerated by /etc/kernel/postinst.d/apt-auto-removal
APT::NeverAutoRemove
{
   "^linux-image-4\.3\.0-5-generic$";
   "^linux-image-4\.3\.0-6-generic$";
   "^linux-headers-4\.3\.0-5-generic$";
   "^linux-headers-4\.3\.0-6-generic$";
   "^linux-image-extra-4\.3\.0-5-generic$";
   "^linux-image-extra-4\.3\.0-6-generic$";
   "^linux-signed-image-4\.3\.0-5-generic$";
   "^linux-signed-image-4\.3\.0-6-generic$";
   "^kfreebsd-image-4\.3\.0-5-generic$";
   "^kfreebsd-image-4\.3\.0-6-generic$";
   "^kfreebsd-headers-4\.3\.0-5-generic$";
   "^kfreebsd-headers-4\.3\.0-6-generic$";
   "^gnumach-image-4\.3\.0-5-generic$";
   "^gnumach-image-4\.3\.0-6-generic$";
   "^.*-modules-4\.3\.0-5-generic$";
   "^.*-modules-4\.3\.0-6-generic$";
   "^.*-kernel-4\.3\.0-5-generic$";
   "^.*-kernel-4\.3\.0-6-generic$";
   "^linux-backports-modules-.*-4\.3\.0-5-generic$";
   "^linux-backports-modules-.*-4\.3\.0-6-generic$";
   "^linux-tools-4\.3\.0-5-generic$";
   "^linux-tools-4\.3\.0-6-generic$";
};