R install packages from Shell

To install R packages from the shell (command line), you can follow these steps:

Steps:

1. Open the shell or terminal.
2. Use the R command to enter the R environment by typing the following:

   R
   

   This will open the R console in the terminal.

3. Install R packages using the install.packages() function.

   install.packages("package_name")
   

   For example, to install the ggplot2 package:

   install.packages("ggplot2")
   

4. Exit the R console by typing:

   q()
   

   Then confirm by typing n or y if asked whether to save the workspace.

Alternatively: Install R Packages Directly from Shell

You can also install R packages directly from the shell without entering the R console by using the Rscript command. Here’s the syntax:

Rscript -e "install.packages('package_name')"

For example, to install ggplot2 directly from the shell, run:

Rscript -e "install.packages('ggplot2')"

Installing Multiple Packages at Once

To install multiple packages at once from the shell, you can pass a vector of package names like this:

Rscript -e "install.packages(c('ggplot2', 'dplyr', 'tidyr'))"

Summary:

• To enter R and install packages interactively: Use the R command and install.packages().
• To install packages directly from the shell: Use the Rscript -e command with the install.packages() function.