dpkg-query -W -f='${Conffiles} ' | grep obsolete
 

Hi,

is it true that this call `dpkg-query -W -f='${Conffiles}
' | grep obsolete` show all obsolate files which can be removed ?

I read about this at http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot while upgrading sysv-rc for dependency booting.

My script to detect obsolate files is:
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#!/bin/sh

tmpf=`tempfile`

trap "rm $tmpf" EXIT QUIT

dpkg-query -W -f='${Conffiles}
' | grep obsolete | sed -e 's,[[:space:]]+([^[:space:]]+)[[:space:]]+([^[:space:]]+).*,2 1,g' |md5sum -c 2>/dev/null| grep ": OK$" | sed -e 's,: OK$,,g' >"$tmpf"
vi "$tmpf"
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Greetings,
Raphael