When I first installed Ubuntu 13.04 from a USB stick I was asked to fill in for user username and password so I set one on my own. When I run Ubuntu I click log in but it automatically logs me in as user so I can't type my username. As a result, in order to run certain apps or set up my network I'm asked to type the root password for authentication. I don't wanna log in as a superuser. Please note that I'm a newbie to Ubuntu. Thank you in advance.
Okay, there is a difference between your password and the root password (the password of the account "root").
When you first installed Ubuntu, you specified your username (let's say you chose Ele) and your password; this is the password that you would use to log in. Since you have Ubuntu to log in automatically, you won't be asked for this password when booting Ubuntu.
The default installation of Ubuntu makes your user an admin; that is, it makes you able to install and remove applications and all that. The password that is asked when you install/remove components is usually your password, Ele's password. Take a look at these screenshots:
Now, let's look at another kind of prompt that could ask you for a password:
Essentially, it makes root do 'passwd' which sets a password for the user who used the command.
Type the following in the command line:
Then generate new password for root:
How to change your root password
For both of the following, press Ctrl + Alt + T to launch a Terminal window then:
Then to create a new password for su enter:
Essentially, these commands asks root to do the
Just looked at the other answers and this appears to be an amalgamation of the two previous ones! My apologies.