[R] Command processing of arguments

[Al Piszcz]

In the mail archives I found a solution that sets environment parameters.
http://www.r-project.org/nocvs/mail/r-help/2001/5411.html
However I would rather not create the temp files.


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I am using the following method...


:: File: Rba

#!/bin/sh
##
## ARG 1 is the R program to RUN
## rest of line are arguments

if [ $# -eq 0 ] ; then
  echo
  echo "usage: Rba RPROGRAM.r ARG1 ARG2 ...."
  echo
  exit
fi


program=$1
shift
cmdargs=$*

gtime R --quiet \
  --no-save \
  $cmdargs < $program



-----------------------------------------------------
When I acquire the variables in the R program:
  userargs<-commandArgs()

  # set parameters from commandline
  inputfile<-userargs[4]
  outputfile<-userargs[5]

I get the following error/warnings


ARGUMENT 'filename1' __ignored__
ARGUMENT 'filename2' __ignored__

Does anyone know what this means?, the parameters appear
to make into my program correctly.


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Ideally there would get a PERL GetOpt::Long or Shell getopt
capability/module.