Scripting Front-End for R
This is an alternative front end for use in #! scripts and other scripting applications.
Rscript [options] [-e expr [-e expr2 ...] | file] [args]
- a list of options, all beginning with --. These can be any of the options of the standard R front-end, and also those described in the details.
- expr, expr2
- R expression(s), properly quoted.
- the name of a file containing R commands. - indicates stdin.
- arguments to be passed to the script in
Rscript --help gives details of usage, and
Rscript --version gives the version of
Other invocations invoke the R front-end with selected options. This
front-end is convenient for writing #! scripts since it is an
executable and takes
file directly as an argument. Options
--slave --no-restore are always supplied: these imply
--no-save. (The standard Windows command line has no concept
of #! scripts, but Cygwin shells do.)
Either one or more -e options or
be supplied. When using -e options be aware of the quoting
rules in the shell used: see the examples.
Additional options accepted (before
- gives details of what
Rscriptis doing. Also passed on to R.
listis a comma-separated list of package names or
NULL. Sets the environment variable R_DEFAULT_PACKAGES which determines the packages loaded on startup. The default for
Rscriptomits methods as it takes about 60% of the startup time.
Spaces are allowed in
file (but will need
to be protected from the shell in use, if any, for example by
enclosing the argument in quotes).
unix Normally the version of R is determined at installation, but this can be overridden by setting the environment variable RHOME. windows The R files are found from the location of the Rscript.exe executable. If this is copied elsewhere, the environment variable RHOME should be set to the top directory of the R installation.
Unlike Unix-alikes, this links directly to R.dll rather than running a separate process.