How can I use R through command line?

you can use source() to Read R Code from a File.

2009/4/1 minben <minbenh at gmail.com>:

?Suppose I have written a R program and saved it in test.R . How can I
call the program in the command line?

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minben <minbenh <at> gmail.com> writes:

 Suppose I have written a R program and saved it in test.R . How can I
call the program in the command line?

Assuming Windows (might work under linux)

rterm --vanilla --no-save < myrfile.r

Dieter

"r" == ronggui  <ronggui.huang at gmail.com>
    on Wed, 1 Apr 2009 16:00:16 +0800 writes:

r> you can use source() to Read R Code from a File.

yes, but that's not "in the command line". 
Slightly more closely to the OP's question:

      R CMD BATCH test.R
or
      Rscript test.R

(or   " r  test.R "   if you have installed  'littler' )

Martin Maechler, ETH Zurich 

    r> 2009/4/1 minben <minbenh at gmail.com>:

    >> ?Suppose I have written a R program and saved it in test.R . How can I
    >> call the program in the command line?