sudo: unknown user: root - please help!
I was using terminal, and vim, to edit my /etc/passwd file and got a 'broken pipe' message in the window. I have CentOS
When I logged back onto the server I tried to access the file again using sudo.
I got the following:
sudo: unknown user: root
sudo: unable to initialize policy plugin
I can open the file without sudo, and notice there are a couple of lines that were at beginning of the list that have disappeared - Luckily I've been keeping a 'diary' of what I've been doing over the past couple of months so have a print-out of the contents of passwd.
The missing lines are:
I'm able to copy the missing lines back but the file won't save.
At the bottom of the window I see:
"/etc/passwd" [readonly] 29L, 1454C
When I hit 'ESC :wq' I see:
E45: 'readonly' option is set (add ! to override)
I've tried all manner of ways including ':w !sudo tee %' to try to get this file to save but to no avail.
I also discovered another warning that momentarily displayed then disappeared. I managed to get a screen shot of it.
Found a swap file by the name "var/tmp/passwd.swp"
While opening file "/etc/passwd"
(1) Another program may be editing the same file.
(2) An edit session for this file crashed.
If this is the case, use ":recover" or "vim -r /etc/passwd"
to recover the changes (see ":help recovery").
If you did this already, delete the swap file "/var/tmp/passwd.swp"
to avoid this message.
Can anyone give me any suggestions please? I've spent all day trying to figure it out but I'm fairly new to all this.