Frank Zimmer wrote:
Some possible reasons:
1. Being able to set the shell to something different, without
disturbing anything that depends on root's shell being /bin/sh.
(Maybe not necessary to be this conservative but some people
would rather be safe than sorry.)
2. Allowing some administrators to use different administrators
3. Being able to still access the machine but set root's password
to something invalid, so that any attempt to login as "root"
will always fail, no matter what password you try.
4. Being able to have two separate passwords in case two sets of
people have access to the same system but shouldn't share the
Personally, if I were doing this, I'd prefer to call it "roto",
but I guess that's just because it's more fun (to me). Well,
and easier to type.