Sys.getenv               package:base               R Documentation

Get Environment Variables

Description:

     `Sys.getenv' obtains the values of the environment variables named
     by `x'.

Usage:

     Sys.getenv(x)

Arguments:

       x: a character vector, or missing

Value:

     A vector of the same length as `x', with the variable names as its
     `names' attribute.  Each element holds the value of the
     environment variable named by the corresponding component of `x'
     (or `""' if no environment variable with that name was found).

     On most platforms `Sys.getenv()' will return a named vector giving
     the values of all the environment variables.

Note:

     `getenv' is an alias for backwards compatibility.

See Also:

     `Sys.putenv', `getwd' for the working directory.

Examples:

     Sys.getenv(c("R_HOME", "R_PAPERSIZE", "R_PRINTCMD", "HOST"))

