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I'm getting the message 

E: Malformed line 1 in source list /etc/apt/sources.list.d/bitdefender.list (dist) E: The list of sources could not be read
when I try to open software centre through terminal and a red stop sign at the top of my screen.> I know the reason for the problem, I tried installing a free bitdefender security, but don't know how to fix it and delete the malformed line, any help would be greatly appreciated.
Manuel
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adaus
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1 Answers1

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I have had the same error message. I solved it just commenting (using #) the two lines from the file bitdefender.list. Check the /etc/apt/sources.list.d for bitdefender.list file. If it is there, do the following:

sudo -H gedit /etc/apt/sources.list.d/bitdefender.list

Then, comment out the lines by inserting # at the beginning of each line.

Save the file and try sudo apt-get update in the terminal to check if the problem was solved.

Eliah Kagan
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Fabio Dossi
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    while this will solve the error it will also prevent subsequent updates/upgrades from being found and installed. – amc Sep 10 '13 at 01:11