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When I want to install anything in Ubuntu Software Center I get this message :

software center error

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What happens when you try clicking the Repair button? – Christopher Kyle Horton Oct 7 '11 at 16:59
When I click on repair and enter the password, the process starts and stops. Software Center is up again but the problem remains the same. – Aleksandar Anđelković Oct 7 '11 at 18:46
sudo update >>> /etc/sudoers.d/sudoers: too many levels of includes near line 25 <<< sudo: parse error in /etc/sudoers.d/sudoers near line 25 sudo: no valid sudoers sources found, quitting – Aleksandar Anđelković Oct 7 '11 at 18:47
sorry, forgot apt-get, try this sudo apt-get update – jet Oct 7 '11 at 18:58
Sorry. What is the name for copy service messages? – Aleksandar Anđelković Oct 7 '11 at 19:26


sudo apt-get update

to update your package list. Then

sudo apt-get autoclean

to clean up any partial packages. Then

sudo apt-get clean

to clean up the apt cache.

sudo apt-get autoremove

will clean up any unneeded dependencies. If while doing this you can identify the broken package this code will very forcefully remove it.

sudo dpkg --remove -force --force-remove-reinstreq package name

Change package name to the real name of course.

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