Ubuntu 16.04安装Vim8.0
https://www.aliyun.com/jiaocheng/131859.html
sudo add-apt-repository ppa:jonathonf/vim
sudo apt update
sudo apt install vim
To check out Vim version, run command vim –version.
Uninstall Vim 8.0:
To uninstall Vim 8.0 and downgrade it to the stock version in Ubuntu repository, run the command below to purge the PPA:
sudo apt install ppa-purge &;&; sudo ppa-purge ppa:jonathonf/vim