AT&T Unix Owner's Manual page 311

Updating the UNIX PC
4 Press <Enter>.
The User Login Interface menu appears.
5 Press [COMPUTE SPACE] .
A Confirm message window informs you that
Calculating disk space takes 1-2 minutes.
6 Press <Enter> to continue.
The system calculates user space for all user
names and displays the number of bytes used
by each user name on the system.
7 Press <Exit> to return to the Administration
menu.
Using Passwords
You use passwords to restrict access to user logins and
the install login. A password also protects access to
the UNIX root (or superuser) login. If you installed
the UNIX system software, you are aware of the password
you assigned to the root login during the installation
procedure. These passwords make it more difficult for
unauthorized users to damage or view your user files or
system files.
Protecting the install Login
It is recommended that you add a password to protect
the install login because it is the only login that
permits access to the extended Administration menu.
The Administration menu of the install login contains
many selections that could disrupt other users of the
system if these selections were accidentally changed or
deleted. Once protected with a password, the
Administration menu of the install login is available
only to those who need to use it. Follow the
procedures for adding a password to create the login
password.
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