ubuntu16.04手动升级到ubuntu18.04

sudo apt-get update
sudo apt-get dist-upgrade
sudo apt-get autoremove
sudo apt-get install update-manager-core
sudo do-release-upgrade

以上操作有y选y。

可能的报错：

Your python3 install is corrupted. Please fix the ‘/usr/bin/python3’ symlink.

解决：

sudo rm /usr/bin/python
sudo ln -s /usr/bin/python2.7 /usr/bin/python
do-release-upgrade

重启完成。