debian/apt.conf.autoremove

   1 APT
   2 {
   3   NeverAutoRemove
   4   {
   5         "^linux-image.*";
   6         "^linux-restricted-modules.*";
   7         "^linux-ubuntu-modules-.*";
   8   };
   9
  10   Install-Recommends-Section "metapackages";
  11   Never-MarkAuto-Section "metapackages";
  12 };