oot@lubuntu:/# sudo apt-get install --reinstall grub2-common
sudo: unable to resolve host lubuntu
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.
Need to get 0 B/501 kB of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 379403 files and directories currently installed.)
Preparing to unpack .../grub2-common_2.02~beta2-9ubuntu1.3_amd64.deb ...
Unpacking grub2-common (2.02~beta2-9ubuntu1.3) over (2.02~beta2-9ubuntu1.3) ...
Processing triggers for install-info (5.2.0.dfsg.1-2) ...
Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
/usr/bin/mandb: the setuid man user "man" does not exist
Setting up grub2-common (2.02~beta2-9ubuntu1.3) ...
root@lubuntu:/#