How to setup the same user/passwd and group on multiple ubuntu machines?

[Colin Law]

On 25 December 2013 11:50, Gene Heskett <gheskett at wdtv.com> wrote:
> On Wednesday 25 December 2013 06:44:54 Colin Law did opine:
>
>> On 24 December 2013 22:22, Karl Auer <kauer at biplane.com.au> wrote:
>> > ...
>> > Same passwords on multiple
>> > machines is a really bad idea.
>>
>> Why?
>> I have six machines in my home, all with myself as a user with the
>> same password.  What is the problem with that?
>>
>> Colin
>
> Because then your only defense against the black hats is your router.  Once
> thru that, and they manage to get root on one machine, they own them all.
> You do have a _good_ router with aftermarket reflash don't you?

I don't see that, as I said I have ssh key access between the machines
so once into one they are into all anyway.  In addition you could
argue that with different passwords there is a greater chance of
guessing a password as there are more chances to get it right.  Also
since all the important data is in the server, which all the machines
have access to, then access to any one is no worse than access to all
of them.

I don't have a root password set of course.

Coln