/var/lib/dpkg/info”用于保存各个软件包的配置文件列表，误删该文件夹，并不会造成系统瘫痪，但会对后续软件的安装造成影响，导其无法找到相关的依赖库，导致软件安装失败。
1.以下解决方案来自google:运行一下脚本文件：
#!/bin/bash
set -e
# Clean out /var/cache/apt/archives
apt-get clean
# Fill it with all the .debs we need
apt-get --reinstall -dy install $(dpkg --get-selections | grep '[[:space:]]install' | cut -f1)
DIR=$(mktemp -d -t info-XXXXXX)
for deb in /var/cache/apt/archives/*.deb
do
# Move to working directory
cd "$DIR"
# Create DEBIAN directory
mkdir -p DEBIAN
# Extract control files
dpkg-deb -e "$deb"
# Extract file list, fixing up the leading ./ and turning / into /.
dpkg-deb -c "$deb" | awk '{print $NF}' | cut -c2- | sed -e 's/^\/$/\/./' > DEBIAN/list
# Figure out binary package name
DEB=$(basename "$deb" | cut -d_ -f1)
# Copy each control file into place
cd DEBIAN
for file in *
do
cp -a "$file" /var/lib/dpkg/info/"$DEB"."$file"
done
# Clean up
cd ..
rm -rf DEBIAN
done
rmdir "$DIR"
亲测，在本人机器上无效。
2.前提是aptitude可以使用，否则无效。首先用1中方法解决，确实在info下生成了相关文件，但却没有生效。本人刚开始时用
aptitude命令，提示未找到该命令，sudo apt-get install aptitude 也无法安装成功，改为apt-get 也是不成功，因为info删除后，找不到相关的依赖库，所以拷贝了与本机器相同（系统版本号一模一样）info文件夹，可以安装新的软件，但却无法卸载以前的软件，后面运行下面脚本，基本修复了该问题。
#!/bin/bash
for package in $(cat dpkg-warning.txt | grep "dpkg: warning: files list file for package " | grep -Po "'[^']*'" | sed "s/'//g")；
do
aptitude reinstall "$package";
#如果没有安装aptitude, 则可以用apt-get --reinstall "$package";
done
cat dpkg-warning.txt
dpkg: warning: files list file for package 'phddns' missing; assuming package has no files currently installed
dpkg: warning: files list file for package 'valgrind-dbg' missing; assuming package has no files currently installed
dpkg: warning: files list file for package 'linux-headers-generic' missing; assuming package has no files currently installed
dpkg: warning: files list file for package 'libxml-sax-perl' missing; assuming package has no files currently installed
dpkg: warning: files list file for package 'libgcc-5-dev-arm64-cross' missing; assuming package has no files currently installed
2来自于：https://blog.csdn.net/taosera/article/details/79420257?utm_source=blogxgwz0
以上两种方法，经检测是最可靠的，如果都没办法的，只能重装系统了，所以使用强制删除时要谨慎啊？网上部分帖子的命令，在完全不了解的情况下也不要随意尝试。