This help topic is for R version 1.5.0. For the current version of R, try https://stat.ethz.ch/R-manual/R-patched/library/base/html/getenv.html
Sys.getenv {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.

See Also

Sys.putenv, getwd for the working directory.

Examples

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

[Package base version 1.5.0 ]