Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!vsi1!altos86!dtynan
From: bobk@fred.UUCP (Bob Kinne)
Newsgroups: comp.unix
Subject: Passwd file
Message-ID: <3474@altos86.Altos.COM>
Date: 25 Aug 89 22:05:24 GMT
Sender: dtynan@altos86.Altos.COM
Reply-To: uunet!ncar.UCAR.EDU!boulder!fred!bobk (Bob Kinne)
Organization: University of Colorado, Boulder
Lines: 5
Approved: dtynan@zorba.Tynan.COM

What is the purpose of the following /etc/passwd entry?

::0:0:::    (null login, password, and shell)

Thanks.