remove unneeded configuration files in debian

dpkg-query -l| grep -v "ii " | grep "rc " | awk '{print $2" "}' | tr -d "\n" | xargs aptitude purge -y
This will, for an application that has already been removed but had its configuration left behind, purge that configuration from the system. To test it out first, you can remove the last -y, and it will show you what it will purge without actually doing it. I mean it never hurts to check first, "just in case." ;)

What Others Think

All 3 (so far) methods at http://www.commandlinefu.com/commands/view/2021 are nicer than this.
sud0er · 710 weeks and 1 day ago
well this does it all at once.
thepicard · 710 weeks ago
What's the sense in grep -v "ii " | grep "rc "? Somehow this doesn't make any sense at all. grep "^rc " is more than just sufficient. Additionally, aptitude is quite ressource hungy, a simple dpkg -P is more straighter.
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