User unknown after Update

Question

I updated my arch distribution and thought i could be lazy and handle the pacnew files automatically which was a bad idea.
Now i have the problem, that my user is not known to the system.
Whoami sasy: whoami: cannot find name for user ID 1000
/etc/passwd says:
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/bin/false
daemon:x:2:2:daemon:/sbin:/bin/false
mail:x:8:12:mail:/var/spool/mail:/bin/false
ftp:x:14:11:ftp:/srv/ftp:/bin/false
http:x:33:33:http:/srv/http:/bin/false
nobody:x:99:99:nobody:/:/bin/false
dbus:x:81:81:System message bus:/:/bin/false
elk0:x:1000:100::/home/elk0:/bin/zsh
avahi:x:84:84:avahi:/:/bin/false
usbmux:x:140:140:usbmux user:/:/sbin/nologin
rtkit:x:133:133:RealtimeKit:/proc:/sbin/nologin
gdm:x:120:120:Gnome Display Manager:/var/lib/gdm:/sbin/nologin
ntp:x:87:87:Network Time Protocol:/var/lib/ntp:/bin/false
git:x:999:998:git daemon user:/:/bin/bash
uuidd:x:998:997::/:/sbin/nologin
mysql:x:89:89::/var/lib/mysql:/bin/false
kdm:x:135:135::/var/lib/kdm:/bin/false
polkitd:x:102:102:Policy Kit Daemon:/:/bin/false
I googled a lot but nothing worked yet (i even tried to revert to the backuped files. Now i am at the end of my linux knowledge and need help urgently.

Answer 1

I ran into the tex problem which is described here https://www.archlinux.org/news/texlive- … ervention/ and used pacdiff. Because i was lazy (yes shame on me, it will never happen again, hard lesson!), i just ran through the process which than has overwritten the passwd with passwd.pacnew, which has the following content:
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/bin/false
daemon:x:2:2:daemon:/sbin:/bin/false
mail:x:8:12:mail:/var/spool/mail:/bin/false
ftp:x:14:11:ftp:/srv/ftp:/bin/false
http:x:33:33:http:/srv/http:/bin/false
uuidd:x:68:68:uuidd:/:/sbin/nologin
dbus:x:81:81:dbus:/:/sbin/nologin
nobody:x:99:99:nobody:/:/bin/false
As it seems now, this has also been done to the following files (backups of the old exists)
/etc/shadow
/etc/gshadow
/etc/group
So googling around someone with an similar sounding problem has resolved that by replacing the new files with the backups. So i did, but it didn't work.
Edit: pacman -Qii filesystem  is giving me following List of backuped files:
UNMODIFIED /etc/fstab
UNREADABLE /etc/crypttab
UNREADABLE /etc/group
MODIFIED /etc/hosts
UNMODIFIED /etc/ld.so.conf
UNREADABLE /etc/passwd
UNREADABLE /etc/shadow
UNREADABLE /etc/gshadow
MODIFIED /etc/resolv.conf
UNMODIFIED /etc/motd
UNMODIFIED /etc/nsswitch.conf
MODIFIED /etc/shells
UNMODIFIED /etc/host.conf
UNMODIFIED /etc/securetty
MODIFIED /etc/profile
UNMODIFIED /etc/issue
Last edited by elk0 (2013-08-06 10:24:23)