[GRASS5] how to make 'nobody' account available?

[Ping Liu]

Good evening,

I'm trying to do some programming on a computer to simulate the
application on another computer, simply speaking, try to make two computer
run the same program.

In the first computer, 'nobody' account works okay. But in the second
computer, I got an error message saying something like

nobody account is currently unavailable

Does anybody have an idea for this? Could you lend me a hand? Thank you
very much for your help.

Ping