damian@NIC-WEB01~$ ls /boot ; ls /lib/modules; sudo update-grub
abi-4.4.0-83-generic     initrd.img-4.4.0-38-generic  initrd.img-4.4.0-71-generic  initrd.img-4.4.0-83-generic  vmlinuz-4.4.0-83-generic
abi-4.4.0-87-generic     initrd.img-4.4.0-63-generic  initrd.img-4.4.0-72-generic  initrd.img-4.4.0-87-generic  vmlinuz-4.4.0-87-generic
config-4.4.0-83-generic  initrd.img-4.4.0-64-generic  initrd.img-4.4.0-75-generic  lost+found
config-4.4.0-87-generic  initrd.img-4.4.0-66-generic  initrd.img-4.4.0-78-generic  System.map-4.4.0-83-generic
grub                     initrd.img-4.4.0-70-generic  initrd.img-4.4.0-79-generic  System.map-4.4.0-87-generic
4.4.0-63-generic  4.4.0-66-generic  4.4.0-71-generic  4.4.0-75-generic  4.4.0-79-generic  4.4.0-87-generic
4.4.0-64-generic  4.4.0-70-generic  4.4.0-72-generic  4.4.0-78-generic  4.4.0-83-generic
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.4.0-87-generic
Found initrd image: /boot/initrd.img-4.4.0-87-generic
Found linux image: /boot/vmlinuz-4.4.0-83-generic
Found initrd image: /boot/initrd.img-4.4.0-83-generic
done