:~$ sudo apt-get autoremove 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  linux-headers-3.13.0-77 linux-headers-3.13.0-77-generic
  linux-image-3.13.0-77-generic linux-image-extra-3.13.0-77-generic
0 upgraded, 0 newly installed, 4 to remove and 0 not upgraded.
After this operation, 271 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 168496 files and directories currently installed.)
Removing linux-headers-3.13.0-77-generic (3.13.0-77.121) ...
Removing linux-headers-3.13.0-77 (3.13.0-77.121) ...
Removing linux-image-extra-3.13.0-77-generic (3.13.0-77.121) ...
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 3.13.0-77-generic /boot/vmlinuz-3.13.0-77-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.13.0-77-generic /boot/vmlinuz-3.13.0-77-generic
update-initramfs: Generating /boot/initrd.img-3.13.0-77-generic
run-parts: executing /etc/kernel/postinst.d/pm-utils 3.13.0-77-generic /boot/vmlinuz-3.13.0-77-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 3.13.0-77-generic /boot/vmlinuz-3.13.0-77-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.13.0-77-generic /boot/vmlinuz-3.13.0-77-generic
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.13.0-79-generic
Found initrd image: /boot/initrd.img-3.13.0-79-generic
Found linux image: /boot/vmlinuz-3.13.0-77-generic
Found initrd image: /boot/initrd.img-3.13.0-77-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
done
Removing linux-image-3.13.0-77-generic (3.13.0-77.121) ...
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.13.0-77-generic /boot/vmlinuz-3.13.0-77-generic
update-initramfs: Deleting /boot/initrd.img-3.13.0-77-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.13.0-77-generic /boot/vmlinuz-3.13.0-77-generic
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.13.0-79-generic
Found initrd image: /boot/initrd.img-3.13.0-79-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
done
The link /vmlinuz.old is a damaged link
Removing symbolic link vmlinuz.old 
 you may need to re-run your boot loader[grub]
The link /initrd.img.old is a damaged link
Removing symbolic link initrd.img.old 
 you may need to re-run your boot loader[grub]