:~$ apt-get install -f
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
user@user:~$ sudo -s
[sudo] password for user:
root@user:~# apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  linux-headers-4.4.0-21 linux-headers-4.4.0-21-generic
  linux-image-4.4.0-21-generic linux-image-extra-4.4.0-21-generic
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  linux-image-extra-4.4.0-66-generic
The following NEW packages will be installed:
  linux-image-extra-4.4.0-66-generic
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
Need to get 0 B/36,0 MB of archives.
After this operation, 153 MB of additional disk space will be used.
Do you want to continue? [Y/n] Y
(Reading database ... 257582 files and directories currently installed.)
Preparing to unpack .../linux-image-extra-4.4.0-66-generic_4.4.0-66.87_amd64.deb ...
Unpacking linux-image-extra-4.4.0-66-generic (4.4.0-66.87) ...
dpkg-deb (subprocess): decompressing archive member: internal bzip2 read error: 'DATA_ERROR'
dpkg-deb: error: subprocess <decompress> returned error exit status 2
dpkg: error processing archive /var/cache/apt/archives/linux-image-extra-4.4.0-66-generic_4.4.0-66.87_amd64.deb (--unpack):
 cannot copy extracted data for './lib/modules/4.4.0-66-generic/kernel/fs/nls/nls_cp950.ko' to '/lib/modules/4.4.0-66-generic/kernel/fs/nls/nls_cp950.ko.dpkg-new': unexpected end of file or stream
Errors were encountered while processing:
 /var/cache/apt/archives/linux-image-extra-4.4.0-66-generic_4.4.0-66.87_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)