| Rscript {utils} | R Documentation |
This is an alternative front end for use in #! scripts and
other scripting applications.
Rscript [options] [-e expression] file [args]
options |
A list of options beginning with --. These can
be any of the options of the standard R front-end, and also those
described in the details. |
expression |
a R expression. |
file |
The name of a file containing R commands. -
indicates ‘stdin’. |
args |
Arguments to be passed to the script in file. |
Rscript --help gives details of usage, and Rscript
--version gives the version of Rscript.
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.
Either one or more -e options or file should
be supplied.
Additional options accepted (before file or args) are
--verboseRscript is
doing. Also passed on to R.--default-packages=listlist is 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 Rscript omits
methods as it takes about 60% of the startup time.
Normally the version of R is determined at installation, but this can
be overridden by setting the environment variable RHOME.
stdin() refers to the input file, and
file("stdin") to the stdin file stream of the
process.
Rscript is only supported on systems with the execv
system call.
## Not run:
Rscript -e 'date()' -e 'format(Sys.time(), "
## example #! script
#! /path/to/Rscript --vanilla --default-packages=utils
args <- commandArgs(); args <- args[-(1:match("--args", args)]
res <- try(install.packages(args))
if(inherits(res, "try-error")) q(status=1) else q()
## End(Not run)