http://wiki.centos.org/TipsAndTricks/BecomingRoot

[filbranden at gmail.com (Filipe Brandenburger)]

Hi,

2009/7/10 Christoph Maser <cmr at financial.com>:
> In the sudo section please add "sudo -s" and "sudo -i" as ways to open a
> root-shell.

Please note that while "sudo -s" is available in both CentOS-4 and
CentOS-5, "sudo -i" is available in CentOS-5 only. I think the Wiki
page should state that.

Thanks,
Filipe