Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!att!mcdchg!laidbak!obdient!gagme!greg
From: greg@gagme.chi.il.us (Gregory Gulik)
Newsgroups: comp.unix.questions
Subject: Re: UNIX LOGIN
Message-ID: <554@gagme.chi.il.us>
Date: 12 Jul 90 04:45:50 GMT
References: <23825@adm.BRL.MIL>
Organization: GAGME - Public Access UNIX of Niles, Illinois, USA, Earth
Lines: 31

In article <23825@adm.BRL.MIL> Bhargis@mrsa1 writes:
>I,ve logged in to some unix bulliten boards,, and immidiately got into menu
>driven procedures, asking your name, where you are calling from etc..
>eventually asking you to assign your own userid (for first time users), does 
>anyone know how that is accomplished,, sure would appriciate the info...
>I,ve been tasked to develop such a bulliten board, and would sure love to
>know how the unix login was bypassed,,,,,,,anyone with that knowledge???


Easy.

First, you create a login for new users to use.  I happen to use 'newuser'
here on Gagme.  Then, for the default shell, you put the path to the
executable file that contains the menu driven program.  I think it
has to be an executable image, not a shell script.

So, for example, here on Gagme I have:


newuser::106:1:New User:/usr/newuser:/usr/newuser/new

The newuser login has no password, and executes /usr/newuser/new
when it logs in, instead of the normal UNIX login...


-greg

-- 
Gregory A. Gulik					Call Gagme, a public
       greg@gagme.chi.il.us  ||  ...uunet!motcid!gulik	access UNIX system at
   ||  gulik@depaul.edu					(708) 318-7133