$ ls -al /vmlinuz* /initrd.img*
lrwxrwxrwx 1 root root 32 Jul 12 22:11 /initrd.img -> boot/initrd.img-4.4.0-83-generic
lrwxrwxrwx 1 root root 32 Jun 29 06:12 /initrd.img.old -> boot/initrd.img-4.4.0-83-generic
lrwxrwxrwx 1 root root 29 Jun 29 06:10 /vmlinuz -> boot/vmlinuz-4.4.0-83-generic
lrwxrwxrwx 1 root root 29 Jun 20 06:19 /vmlinuz.old -> boot/vmlinuz-4.4.0-81-generic