[ubuntu] E: The list of sources could not be read.

I want to upgrade to gnome 3.6 so I add a repository and try it but when I want to use Code: sudo apt-get update I receive this error

Code: E: Type 'ain' is not known on line 1 in source list /etc/apt/sources.list.d/gnome3-team-gnome3-precise.list E: The list of sources could not be read. How can I fix this problem ?

I am trying to update/add a repository.

Whenever I try to install any software using terminal or by entering sudo apt-get update, the result is:

E: Malformed line 56 in source list /etc/apt/sources.list (dist parse) E: The list of sources could not be read.

First of all say apology to Ask Duplicate Question.

I'm Using First time Ubuntu 12.10 OS.when i'm update the Update Manager it is giving error like this ....

Failed to load the package list:

This is a serious problem. Try again later.

I am using Ubuntu 12.10. I think my problem in downloading some applications are related to this problem. I can't download applications using terminal.

Translated: Type "b-src 'is not known on line 2 in the file / etc / apt / sources.list.d / tualatrix-ppa-precise.list, E: Unable to read the list of sources., E: The list of packages or status file could not be parsed or opened. '

how to break the deadlock?

i am trying to update Ubuntu via terminal, but it gives the error message as bellow

E: Malformed line 1 in source list /etc/apt/sources.list.d/google.list (dist parse) E: The list of sources could not be read.

my Ubuntu software center could be the problem?

I'm trying to install java jre, i usually do it like this

sudo echo 'deb http://www.duinsoft.nl/pkg debs all' >> /etc/apt/sources.list sudo apt-key adv --keyserver keys.gnupg.net --recv-keys 5CB26B26 sudo apt-get update sudo apt-get install update-sun-jre exit

but when i do

sudo echo 'deb http://www.duinsoft.nl/pkg debs all' >> /etc/apt/sources.list

i see

permission denied:

The Ubuntu sources.list generator, is a web application that can create custom sources.list files for various version of Ubuntu. The sources.list file tells the packaging system where it can look for software to install. The generator can add many additional sources, including those for proprietary software.