解决E: Could not open lock file /var/lib/dpkg/lock-frontend - open (2: No such file or directory)E: Un

sudo mkdir -p /var/lib/dpkg/{alternatives,info,parts,triggers,updates}
sudo cp /var/backups/dpkg.status.0 /var/lib/dpkg/status
apt-get download dpkg
sudo dpkg -i dpkg*.deb
apt-get download base-files
sudo dpkg -i base-files*.deb
sudo apt-get update
sudo apt-get check