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\name{putenv}
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\name{Sys.putenv}
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\title{Set Environment Variables}
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\title{Set Environment Variables}
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\usage{
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\usage{
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putenv(\dots)
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Sys.putenv(\dots)
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}
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}
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\alias{putenv}
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\alias{Sys.putenv}
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\arguments{
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\arguments{
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  \item{\dots}{arguments in \code{name=value} form, with \code{value}
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  \item{\dots}{arguments in \code{name=value} form, with \code{value}
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    coercible to a character string.}
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    coercible to a character string.}
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}
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}
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\description{
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\description{
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  \code{putenv} sets environment variables (for other processes called
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  \code{putenv} sets environment variables (for other processes called
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  from within \R or future calls to \code{\link{getenv}} from this
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  from within \R or future calls to \code{\link{Sys.getenv}} from this
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  \R process).
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  \R process).
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}
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}
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\value{
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\value{
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  A logical vector of the same length as \code{x}, with elements being
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  A logical vector of the same length as \code{x}, with elements being
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  true if setting the corresponding variable succeeded.
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  true if setting the corresponding variable succeeded.
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}
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}
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\details{
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\details{
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  Non-standard \R names must be quoted: see the Examples section.
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  Non-standard \R names must be quoted: see the Examples section.
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}
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}
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\note{
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\note{
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  Not all systems need support \code{putenv}.
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  Not all systems need support \code{Sys.putenv}.
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}
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}
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\seealso{
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\seealso{
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  \code{\link{getenv}},
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  \code{\link{Sys.getenv}},
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  \code{\link{setwd}} for the working directory.
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  \code{\link{setwd}} for the working directory.
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}
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}
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\examples{
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\examples{
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print(putenv("R_TEST"="testit", ABC=123))
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print(Sys.putenv("R_TEST"="testit", ABC=123))
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getenv("R_TEST")
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Sys.getenv("R_TEST")
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}
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}
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\keyword{environment}
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\keyword{environment}
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\keyword{utilities}
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\keyword{utilities}