install R 4.0 in ubuntu

#1 清除R3先

 

sudo apt-get --purge remove r-base

sudo apt-get --purge remove r-base-core

sudo apt-get --purge remove r-base-dev

 

##1.1 remove rstudio

 sudo dpkg -r rstudio-server

#2 升级系统

sudo apt install --fix-missing libcurl4-openssl-dev libxml2-dev libgdal-dev libssl-dev libglu1-mesa-dev libmagick++-dev libudunits2-dev 

sudo apt install -y libcurl4-gnutls-dev
sudo apt install -y  libxml2-dev
sudo apt install -y  openssl 
sudo apt install -y  libssl-dev

#3 安装R4

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
sudo add-apt-repository 'deb https://mirrors.ustc.edu.cn/CRAN/bin/linux/ubuntu focal-cran40/'
sudo apt update
sudo apt install r-base

# 查看R安装选择
apt-cache policy r-base r-base-core r-base-dev r-recommended

 # R4 package loacation

R

> .libPaths()
[1] "/usr/local/lib/R/site-library" "/usr/lib/R/site-library"
[3] "/usr/lib/R/library"

 

# R 包 清华景象

options(repos=structure(c(CRAN="https://mirrors.tuna.tsinghua.edu.cn/CRAN/")))