Hot answers tagged authentication
1
The command you're looking for is sudo -s. You can also accomplish the same thing with sudo bash
su and sudo su doesn't work on Ubuntu for security reasons. It fails because the root user does not have a password, and those operations are you attempting to "log in" as user root
1
Press
Ctrl+Alt+F1
Then logged in, And run the following command
sudo chown -R user:user /home/user/.*
Where user:user is your user name, example qasim:qasim
Help
http://ubuntuforums.org/showthread.php?t=2065472
getting setgid:Operation not permitted error while running 'su' command - Ubuntu 12.04
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