used. That's what becomes the value of DUZ.
You'll notice that some users have low numbers while others have high ones.
This simply indicates the order of their names in the User File. Users
with low numbers are often people who began using your system some years
ago, while users with high numbers are recent members of your computing
community. Other than this curiosity, though, DUZ has no special meaning
for an individual user.
When listing the file accesses by user or by file, you will see the user's
name followed by a number in parentheses. The heading indicates that this
is the DUZ#. What could it be?
DUZ is a local variable which identifies the user who has signed-on. Once
the user enters an access and verify code, the Kernel sign-on program (XUS)
uses this variable to select an entry in the User File. It must be
unique, so the user's name won't do. Instead, the internal entry number is