====== Ubuntu - Groups - Ensure consistency between group and shadow group files ======

There should be consistency in **/etc/group** and **/etc/gshadow**.  

Run the **grpck** command to check that these two files reconcile.

<code bash>
grpck
</code>

result:

<code bash>
no matching group file entry in /etc/gshadow
add group 'sambasecureshare' in /etc/gshadow? y
'john' is a member of the 'sshusers' group in /etc/group but not in /etc/gshadow
'root' is a member of the 'tomcat' group in /etc/gshadow but not in /etc/group
</code>

As can be seen there are a number of inconsistencies.

Lets fix these.

Action:

  * Accept the offer to add the group 'sambasecureshare' in /etc/gshadow by entering a '**y**' and pressing enter.

  * Add 'john' to the 'sshusers' group in /etc/gshadow manually.

  * We don't want root to belong to the 'tomcat' group, so we remove this from /etc/gshadow.