Install R-Project on Ubuntu 18.04

Again, setting up a new Ubuntu instance on EC2.

Install R as follows:

# Step 1 — Add GPG Key
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9

# Step 2 — Add the R Repository
sudo add-apt-repository 'deb https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/'

# Step 3 — Update Package Lists
sudo apt update

# Step 4 — Install R
sudo apt install r-base

# credit: https://www.digitalocean.com/community/tutorials/how-to-install-r-on-ubuntu-18-04-quickstart