Ubuntu 18.04用 sudo apt install r-base sudo apt install gdebi-core wget https://download1.rstudio.org/desktop/bionic/amd64/rstudio-1.3.1073-amd64.deb sudo gdebi rstudio-1.3.1073-amd64.deb Ubuntu 20.04用 Rのバージョンも違うかも # install R …