debian/apt.conf.autoremove

   1 APT
   2 {
   3   NeverAutoRemove
   4   {
   5         "^linux-firmware$";
   6         "^linux-image.*";
   7         "^linux-restricted-modules.*";
   8         "^linux-ubuntu-modules-.*";
   9   };
  10
  11   Never-MarkAuto-Sections
  12   {
  13         "metapackages";
  14         "restricted/metapackages";
  15         "universe/metapackages";
  16         "multiverse/metapackages";
  17   };
  18 };