I need to fix Ubuntu Accounts but somehow don't really see how it could be done.
The problem is: files /etc/passwd and /etc/hostname and /etc/hosts where changed.
/etc/passwd
After
John:x:1000:1000:John,,,:/home/serg:/bin/bash
Before
serg:x:1000:1000:John,,,:/home/serg:/bin/bash
/etc/hosts
After
127.0.0.1 localhost
127.0.1.1 John-The-Rippe
Before
127.0.0.1 localhost
127.0.1.1 serg-Protege
/etc/hostname
After
John-The-Ripper
Before
serg-PORTEGE-Z835
I was trying to simply changed this files but can not do this because permission denied. When I'm trying to login as a root I got this message:
John@John-The-Ripper:~$ sudo -s
[sudo] password for John:
John is not in the sudoers file. This incident will be reported
The file sudoers is empty:
John@John-The-Ripper:~$ vi /etc/sudoers
When I type users in cp:
John@John-The-Ripper:~$ users
John John
When I type id, I got this:
John@John-The-Ripper:~$ id
uid=1000(John) gid=1000(serg) groups=1000(serg)
This doesn't work either:
John@John-The-Ripper:~$ usermod -l John serg
usermod: user 'serg' does not exist
John@John-The-Ripper:~$ adduser serg
adduser: Only root may add a user or group to the system.
ater.
Then I tried to go to the GRUB menu and from there log in as a root. I did this, but however when I tried to create user serg, it gave me an error that group already exist. When I tried to change /etc/passwd it said permission denied.
And this doesn't do the trick:
John@John-The-Ripper:~$ visudo
visudo: /etc/sudoers: Permission denied
visudo: /etc/sudoers: Permission denied
Also the last thing I tried to do is to create a bootable USB and reinstall Ubuntu, however I cannot open USB-Creator because it asked me a root passwordd. But it doesn't work.
Help me please.
