R is a programming language extensively used in statistics. This guide explains how to install R on a cloud server running Ubuntu or Debian operating systems.

To install R, you only need to execute the following command.

$ sudo apt install r-base -y

To enter the R environment, run the R command.

$ R
R version 3.5.2 (2018-12-20) -- "Eggshell Igloo"
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

To exit the R environment, execute q() and press Enter.

> q()

R packages enhance the capabilities of the R language. Here's how to install an R package. Replace "txtplot" with the actual name of the package.

$ R
> install.packages('txtplot')
> library('txtplot')
> txtplot(cars[,1], cars[,2], xlab = 'speed', ylab = 'distance')

The output is as follows:

      +----+-----------+------------+-----------+-----------+--+
  120 +                                                   *    +
      |                                                        |
d 100 +                                                   *    +
i     |                                    *                *  |
s  80 +                          *         *                   +
t     |                                       * *    *    *    |
a  60 +                          *  *      *    *      *       +
n     |                        *         * *  * *              |
c  40 +                *       * *    *  *    * *              +
e     |         *      *  * *  * *  *                          |
   20 +           *    *  * *       *                          +
      |  *      *    *                                         |
    0 +----+-----------+------------+-----------+-----------+--+
           5          10           15          20          25   
                                speed                           

To get help on a package, use the help command. For instance, to get help on the txtplot package, run the following command.

> help(txtplot)