Remove Residual Packages

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When you remove some packages using apt-get remove they are not completely removed and some configuration files are left. You can confirm this by executing following command. 

dpkg -l | grep -i ^rc

Execute following command to remove all traces left by alredy removed packages.

dpkg -l | grep -i ^rc | awk '{print $1}' | xargs -n 10 sudo aptitude -y purge

Above command cleans up 10 removed package traces at a time.

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