Preparing to unpack .../tar_1.28-2.1ubuntu0.1_amd64.deb ...
Unpacking tar (1.28-2.1ubuntu0.1) over (1.28-2.1) ...
Setting up tar (1.28-2.1ubuntu0.1) ...
update-alternatives: error: cannot scan directory '/var/lib/dpkg/alternatives': No such file or directory
dpkg: error processing package tar (--configure):
 subprocess installed post-installation script returned error exit status 2