gpietro@gpietro-P55-US3L:~$ sudo dpkg -i libc6_2.19-0ubuntu6.5_amd64.deb
(Reading database ... 334755 files and directories currently installed.)
Preparing to unpack libc6_2.19-0ubuntu6.5_amd64.deb ...
Unpacking libc6:amd64 (2.19-0ubuntu6.5) over (2.19-0ubuntu6.5) ...
dpkg: error processing archive libc6_2.19-0ubuntu6.5_amd64.deb (--install):
 trying to overwrite shared '/usr/share/doc/libc6/changelog.Debian.gz', which is different from other instances of package libc6:amd64
Errors were encountered while processing:
 libc6_2.19-0ubuntu6.5_amd64.deb