cd /var/lib/apt
sudo mv lists lists.old
sudo mkdir -p lists/partial
sudo apt-get update
转自： http://askubuntu.com/questions/198371/apt-encounters-errors-with-bad-gpg-keyscd /var/lib/apt
sudo mv lists lists.old
sudo mkdir -p lists/partial
sudo apt-get update
转自： http://askubuntu.com/questions/198371/apt-encounters-errors-with-bad-gpg-keys