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#!/bin/sh -e
prefclean() {
test -x /usr/share/apt-listbugs/aptcleanup || return 0
test -x /usr/sbin/apt-listbugs || return 0
test -f /etc/apt/preferences || return 0
tmp=$(tempfile)
/usr/share/apt-listbugs/aptcleanup > "$tmp" || return 0
if ! diff -B "$tmp" /etc/apt/preferences > /dev/null; then
if test -f "/var/backups/apt-listbugs.preferences"; then
savelog -q /var/backups/apt-listbugs.preferences
fi
cp -aH /etc/apt/preferences /var/backups/apt-listbugs.preferences
cp "$tmp" /etc/apt/preferences
fi
/bin/rm -f "$tmp"
}
prefclean
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