[R] commandArgs usage and --args invokation

ivo welch ivowel at gmail.com
Sun Apr 1 03:51:01 CEST 2007

Dear R experts:

I am a bit stymied by how the argument picking-off works in R batch file usage.

$ cat commandArgs.R
cat(" Command Line Arguments were ", commandArgs(), "\n");

$ /usr/bin/R CMD BATCH commandArgs.R --args 1 2 3

$ /usr/bin/R --args 1 CMD BATCH commandArgs.R
... I am now getting into interactive mode ?!  I guess it really is skipping the
rest of the command line

$ /usr/bin/R CMD BATCH commandArgs.R --args 1

$ ls -lt | head
total 1628148
-rw-rw-r-- 1 ivo ivo       827 Mar 31 21:47 --args

Could someone please let me know?

[also, are there multi-core versions of R?  my guess is no, but since
I have a second processor lying around, I am trying to get it into the

A working example would be appreciated.


/ivo welch

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