shark@shark-Latitude-E6410:~$ sudo apt-get install --reinstall youtube-dl
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  intltool libfakekey0 libqca-qt5-2 libqca-qt5-2-plugins libqqwing2v5 linux-headers-4.8.0-22 linux-headers-4.8.0-22-generic linux-headers-4.8.0-26 linux-headers-4.8.0-26-generic linux-headers-4.8.0-27
  linux-headers-4.8.0-27-generic linux-headers-4.8.0-28 linux-headers-4.8.0-28-generic linux-image-4.4.0-42-generic linux-image-4.8.0-22-generic linux-image-4.8.0-26-generic
  linux-image-4.8.0-27-generic linux-image-4.8.0-28-generic linux-image-extra-4.4.0-42-generic linux-image-extra-4.8.0-22-generic linux-image-extra-4.8.0-26-generic linux-image-extra-4.8.0-27-generic
  linux-image-extra-4.8.0-28-generic python-distutils-extra
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 0 B/729 kB of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 412956 files and directories currently installed.)
Preparing to unpack .../youtube-dl_2016.06.25-2_all.deb ...
Unpacking youtube-dl (2016.06.25-2) over (2016.06.25-2) ...
Setting up youtube-dl (2016.06.25-2) ...
Processing triggers for man-db (2.7.5-1) ...
shark@shark-Latitude-E6410:~$