Tagged Questions

2
votes
2answers
94 views

Authentication failed with the correct password and now I cannot use sudo anymore

Recently I installed Ubuntu 12.04 (first time on Ubuntu). I have my normal "administrator", and another Guest account. I was experimenting today with the user accounts, and set my "administrator" ...
2
votes
0answers
62 views

Immediately after login, my 12.04 LTS desktop asks for my password for “Authentication is required to change user data”

I have two Ubuntu 12.04 systems, one a desktop, and the other running as a NIS/NFS server (a desktop with lightdm disabled). When I login, I get the dialog (not error) "Authentication is required to ...
1
vote
2answers
420 views

I have removed my password now what should I answer when it asks for password?

I used pass word earlier but for now I removed password and used to login without password. Now some actions need administrators aurthentication through password even to set password I it asks for ...
8
votes
3answers
3k views

I deleted the “/etc/passwd” file and cannot log in

I was trying to change my username and also my home directory (/home/username) and my system started to crash. I deleted the passwd file but I had a backup named passwd_bkp. I tried to rename this ...
0
votes
1answer
271 views

Unable to login after changing 'root' name in /etc/passwd

I have ubuntu server on AWS(amazon web services) EC2 . I access it remotely through Putty service on my windows. Unfortunately i have changed the username 'root' to some other editing the file ...