[CentOS] cents 5.6 ..... futur

>> Will it be the same from 5.6 to 6.0 or a full install will be better.
>
> Full installs are always recommended between major versions.


Thank's all for the advise; but is there any easy way to install a newer 
version while keeping all configuration changes that have been made on a 
previous one as for 'sendmail', 'sshd.conf','firewalls', etc...


---
Michel Donais