commandArgs               package:base               R Documentation

Extract Command Line Arguments

Description:

     Provides access to a copy of the command line arguments supplied
     when this R session was invoked.

Usage:

     commandArgs()

Details:

     These arguments are captured before the standard R command line
     processing takes place.  This means that they are the unmodified
     values.  If it were useful, we could provide support an argument
     which indicated whether we want the unprocessed or processed
     values.

     This is especially useful with the '--args' command-line flag to
     R, as all of the command line after than flag is skipped.

Value:

     A character vector containing the name of the executable and the
     user-supplied command line arguments.  The first element is the
     name of the executable by which R was invoked.  As far as I am
     aware, the exact form of this element is platform dependent.  It
     may be the fully qualified name, or simply the last component (or
     basename) of the application.

See Also:

     'Startup' 'BATCH'

Examples:

     commandArgs()
     ## Spawn a copy of this application as it was invoked.
     ## system(paste(commandArgs(), collapse=" "))

