[rhn-users] passwords: UNIX to Linux

[Jonathan Fischer]

If the super-user can see usernames just fine, but no one else, it might be that the permissions on /etc/passwd are incorrect.

-----Original Message-----
From: rhn-users-bounces at redhat.com [mailto:rhn-users-bounces at redhat.com] On Behalf Of Doerbeck, Christoph
Sent: Wednesday, October 13, 2004 11:47 AM
To: cperera at intertechmedia.com; Red Hat Network Users List
Subject: RE: [rhn-users] passwords: UNIX to Linux

No utility as best I know.  Password encryption is a one-way hash,
meaning there's no way to recover the original from an encrypted
(cipher) text.  Without the original, you can create a new one.

I am fairly certain that nothing is blocking you from using both
in the /etc/shadow.  Again, the glibc crypt function is intelligent
enough to know which (DES vs. MD5) to use during verification.

Seeing ID's versus names is an indicator that the userid's are
not correct.  You probably ran useradd to create new users and 
then tar'd/copied the data directories over.  You can either
adjust the userid's in /etc/shadow, or change ownerships (chown).

You have some work to do ;-)



Christoph

-----Original Message-----

Is there a utility that can convert the DES passwords so that they're 
encrypted using md5?

Also, the super user seems to be able to figure out the usernames for maching 
IDs. For example, when i do a directory listing, I see all the ownerships 
properly. However, when I su into another user, I get the following message 

id: cannot find name for the user ID ****

Also a directory listing shows the userid instead of the username for 
file/directory ownerships.

Any ideas?

Charith Perera.











> -----Original Message-----
> From: Charith Perera [mailto:cperera at intertechmedia.com]
> Sent: Wednesday, October 13, 2004 11:34 AM
> To: Red Hat Network Users List
> Subject: Re: [rhn-users] passwords: UNIX to Linux
>
>
> Dr. Schmidt,
>
> Thanks, I didn't notice the -p switch earlier.
>
> Providing the cryptic password worked. However, when I look at the
> /etc/shadow file the encrypted passwords created on the Linux machine are
> much longer than those copied over from the Solaris box. Any idea why this
> is and where I can get more info regarding it.
>
> Thanks,
>
> Charith Perera
>
> On Wednesday 13 October 2004 11:11 am, Dr. Guenter Schmidt wrote:
> > Charith Perera wrote:
> > >I'm in the process of moving one of our servers from a machine running
> > > Solaris to one running RHEL AS. How do I go about transferring all the
> > > users' passwords onto the linux machine.
> >
> > If the old passwords are in /etc/passwd or /etc/shadow extract that field
> > and use the old passwords as input to the useradd command:
> >
> > useradd -u $uid -g $gid -p $passwd -d $home -s $shell -c $gcos  $login
> >
> >
> > --
> > Dr. Günter Schmidt                 | Bruker BioSpin GmbH
> >
> >                                    | NMR Software Department
> >
> > E-Mail: guenter.schmidt at bruker.de  | Silberstreifen
> > Phone: +49 721 5161-443 / Fax:-480 | D-76287 Rheinstetten
> >
> >
> > _______________________________________________
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> > rhn-users at redhat.com
> > https://www.redhat.com/mailman/listinfo/rhn-users
>
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