On Tue, Nov 19, 2024 at 8:48 AM Meikel <[email protected]> wrote:
> > If the above looks good, try adding a new user and see if you can
> > login as that user.
>
> It is not clear to me how I can do this, as I'm only able to start from
> a live media. If I run something like "useradd" this will add a user on
> the live media, but not on the installed system on the disk. As far as I
> know I need to chroot into the existing installation from the live
> media, but I never did that. With a quick search on the internet I found
> a sample script "Setting up chroot from a live image in Fedora.
> Regenerate grub2 for Fedora."
> (https://gist.github.com/Tamal/73e65bfb0e883e438310c5fe81c5de14) and I'm
> wondering if I could use this as a starting point?

You can:
- useradd --root absolute-dirname
- chroot
- edit the files directly

Other thoughts as to things to check....
- expired passwords
- bad character in the password field in /etc/passwd [1]
- something messed-up with PAM - can't help much there

[1] Many years ago I supported a Unix system where suddenly account
passwords weren't working.  IIRC the passwords were set to "*" instead
of "x".  I assume there was an update of some sort and prior to the
update it accepted "*" as "use shadow", but after the update it
insisted on "x".  It was a long time ago, and I may not be remembering
the details correctly.
-- 
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