Give him the root password ;p
In other words, regular user with root permissions is no more regular user, it's root. No point in having root if regular users can be root. Regular users can't have root permissions.
You can grant some permissions, but not all. For instance, you can give access to some directories, or give the permission to execute some commands, but not give all root permissions at once to a regular user or it wouldn't be a regular user. The root user is special and there can be only one or none. If there was 2 root users they wouldn't be root users at all.
Last edited by Agrouf; 12-17-2008 at 08:22 AM.