Users without a password?

[Caleb Marcus]

Thanks for trying, but it didn't work... it actually broke
authentication, preventing anyone (not just the users on that list) from
logging in. I just reversed the changes in recovery mode, and that fixed
it.
On Fri, 2007-11-23 at 11:51 +0700, Fajar Priyanto wrote:

> On Friday 23 November 2007 02:19:48 Caleb Marcus wrote:
> > I'd like to create an unprivileged guest account without a password so
> > that friends and family who come over can use the computer without
> > typing in a password. Is there any way to do this? I don't want to
> > enable auto-login in GDM, because that would be annoying for me.
> 
> From http://ubuntuforums.org/archive/index.php/t-12777.html
> 
> [2] Have a word with PAM!
> PAM is the authentication model employed in Ubuntu. The first thing to do is 
> to edit the PAM file that specifies how authentication should work with GDM. 
> Open the file:
> $ sudo nano /etc/pam.d/gdm
> Add lines that specify a password is not required for the users who are listed 
> in a file that you are going to make later on. The new line in the file 
> example comes between the #start and #end comments, all the other lines were 
> there anyway and remain untouched:
> ----------------------
> #%PAM-1.0
> auth requisite pam_nologin.so
> auth required pam_env.so
> # the line below has been added specifically to allow selected users to log in 
> via GDM without a password
> # start
> auth sufficient pam_listfile.so item=user sense=allow 
> file=/etc/X11/gdm/nopassusers.txt onerr=fail
> # end
> @include common-auth
> @include common-account
> session required pam_limits.so
> @include common-session
> @include common-password
> ----------------------
> 
> [3] Tell PAM who to let in without a pass
> Go to this following location: /etc/X11/gdm/
> Make a new text file there called nopassusers.txt
> In this file, list the usernames of the users who can log in without entering 
> a password. Put each user on a new line.
> 
> OK - that should be it. Like I say, I know this works but have no idea whether 
> it is sensible. Please if you have knowledge contribute to making this a 
> better howto!
> 
> HTH
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