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文件: /var/lib/dpkg/info/whiptail.preinst
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#!/bin/sh set -e # Remove a no-longer used conffile rm_conffile() { local PKGNAME="$1" local CONFFILE="$2" [ -e "$CONFFILE" ] || return 0 local md5sum="$(md5sum $CONFFILE | sed -e 's/ .*//')" local old_md5sum="$(dpkg-query -W -f='${Conffiles}' $PKGNAME | \ sed -n -e "\' $CONFFILE ' { s/ obsolete$//; s/.* //; p }")" if [ "$md5sum" != "$old_md5sum" ]; then echo "Obsolete conffile $CONFFILE has been modified by you." echo "Saving as $CONFFILE.dpkg-bak ..." mv -f "$CONFFILE" "$CONFFILE".dpkg-bak else echo "Removing obsolete conffile $CONFFILE ..." rm -f "$CONFFILE" fi } case "$1" in install|upgrade) if dpkg --compare-versions "$2" le "0.52.18-2"; then rm_conffile whiptail "/etc/bash_completion.d/whiptail" fi esac exit 0
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