[Lubuntu] "passwd -d root" only sort-of deletes root password
lubuntu at prpcompany.com
Wed Oct 24 19:53:06 UTC 2012
This question arises as a separate point from another current thread: "A
script for shutting down an LTSP client from the host?"
I'm stuck at creating a password-less root account.
If at a console I log in as root and then run "passwd -d root," the
output is "passwd: password expiry information changed." Not the output
I would have expected.
If I then run "cat /etc/shadow," the password field is blank and I can
log in at a console as root with no password.
However, if I then run my client shutdown command: "ssh -l root <client
IP> shutdown -h now," it requires a password and only accepts the
I'm not sure if I needed to or not, but in the LTSP chroot environmentI
also then ran passwd -d root and updated the LTSP image.
But now "ssh -l root <client IP> shutdown -h now" will not accept any
password, either the presumably-deleted one or a blank password.
I can return to the previously-established root password by logging in
as root with a blank password at a console and running "passwd root."
(Presumably I can also run passwd in the chroot environment and restore
the old password there also, though I have not confirmed that.) This
heals the split personality, but I'm back where I started.
A Debian user had the same kind of experience with "passwd -d root" and
found that the problem was that PAM was set to use GNOME Keyring Daemon
instead of Unix Authentication, but he did not say how to check on or
configure that, and I have not been able to figure it out yet. That
post is here: http://forums.debian.net/viewtopic.php?f=5&t=52216
Anyone recognize what's going on?
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