su password

[Stephen Tenbrink]

  I have noticed on our NeXt workstation that the passwd entry for root
is something like:  root::0:...etc...

  Now normally one would think that root has no password but this is not
the case.  When I type 'su' I must enter the root password to become
super-user.  The other puzzler is that when I try to login as root the
password no longer works.  Does anyone know what's going on here?  Also,
where is the encrypted root password kept?

Steve Tenbrink
sct at lanl.gov