1. sudo vi /etc/apt/source.list
在 /etc/apt/source.list中加入
deb https://mirrors.tuna.tsinghua.edu.cn/CRAN//bin/linux/ubuntu artful/
2. sudo apt-get update
这一步，出现一个错误：
E: The repository ‘http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu bionic Release’ does not have a Release file.
解决方法，在software sources— —other software中将勾掉http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu bionic main
3.添加PPA
sudo add-apt-repository ppa:marutter/rrutter3.5
4.跟新R
sudo apt install r-api-3.5
