[CentOS] preparing to migrating to new system

Greetings,

On Wed, Dec 22, 2010 at 10:14 AM, Eero Volotinen <eero.volotinen at iki.fi> wrote:
> 2010/12/22 Rajagopal Swaminathan <raju.rajsand at gmail.com>:
>>
>> scp <oldbox>:/etc/passwd <brand new CentOS 6 Box geewiz>:/etc/passwd
>> ditto /etc/gshadow,/etc/groups, /etc/gshadow
>
> It's possibly better way only to cp&paste normal usernames, not
> internal daemons and so on.
>

I did not quite understand the phrase "internal daemons and so on".
Could you elucidate further please...

I alluded to the names of four files which matter in the context.

Regards,

Rajagopal