误删除/var/lib/dpkg解决办法

sudo mkdir -p /var/lib/dpkg/{alternatives,info,parts,triggers,updates}
Recover some backups:
sudo cp /var/backups/dpkg.status.0 /var/lib/dpkg/status
Now, lets see if your dpkg is working (start praying):
apt-get download dpkg
sudo dpkg -i dpkg.deb
If everything is "ok" then repair your base files too:
apt-get download base-files
sudo dpkg -i base-files.deb
Now try to update your package list, etc.:
dpkg --audit
sudo apt-get update
sudo apt-get check