Return the R home directory, or the full path to a component of the R installation.
R.home(component = "home")
As well as
The R home directory is the top-level directory of the R installation being run.
The R home directory is often referred to as R_HOME,
and is the value of an environment variable of that name in an R
It can be found outside an R session by
A character string giving the R home directory or path to a particular component. Normally the components are all subdirectories of the R home directory, but this need not be the case in a Unix-like installation.
The value for
"modules" and on Windows
"bin" is a
On a Unix-alike, the constructed paths are based on the current values of the environment variables R_HOME and where set R_SHARE_DIR, R_DOC_DIR and R_INCLUDE_DIR (these are set on startup and should not be altered).
On Windows the values of
R.home() and R_HOME are
switched to the 8.3 short form of path elements if required and if
the Windows service to do that is enabled. The value of
R_HOME is set to use forward slashes (since many package
maintainers pass it unquoted to shells, for example in
commandArgs() may provide related information.
## These result quite platform dependently : rbind(home = R.home(), bin = R.home("bin")) # often a sub directory of 'home' list.files(R.home("bin"))
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