To load a list of installed packages:

> library()

Setting the default CRAN mirror:

> chooseCRANmirror()

Install a package from CRAN; take package e1071 as an example:

> install.packages("e1071")

Update a package from CRAN; take package e1071 as an example:

> update.packages("e1071")

Load the package the package:

> library(e1071)

If you would like to view the documentation of the package, you can use the help function:

> help(package ="e1071")

If you would like to view the documentation of the function, you can use the help function:

> help(svm, e1071)

Alternatively, you can use the help shortcut, ?, to view the help document for this function:

> ?e1071::svm

If the function does not provide any documentation, you may want to search the supplied documentation for a given keyword. For example, if you wish to search for documentation related to svm:

> help.search("svm")

Alternatively, you can use ?? as the shortcut for help.search:

> ??svm

To view the argument taken for the function, simply use the args function. For example, if you would like to know the argument taken for the lm function:

> args(lm)

Some packages will provide examples and demos; you can use example or demo to view an example or demo. For example, one can view an example of the lm package and a demo of the graphics package by typing the following commands:

> example(lm)
> demo(graphics)

To view all the available demos, you may use the demo function to list all of them:

> demo()