weston@Lenovo-Yoga-2-Pro:~$ sudo apt-get --reinstall install linux-headers-3.16.0-30-generic
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
Need to get 0 B/716 kB of archives.
After this operation, 0 B of additional disk space will be used.
Selecting previously unselected package linux-headers-3.16.0-30-generic.
(Reading database ... 223565 files and directories currently installed.)
Preparing to unpack .../linux-headers-3.16.0-30-generic_3.16.0-30.40~14.04.1_amd64.deb ...
Unpacking linux-headers-3.16.0-30-generic (3.16.0-30.40~14.04.1) over (3.16.0-30.40~14.04.1) ...
Setting up linux-headers-3.16.0-30-generic (3.16.0-30.40~14.04.1) ...