[R] Command Line Expressions

[Liaw, Andy]

Use echo in a Unix shell and pipe it to R.  At the Windows command prompt,
you could try:

c:\home>echo R.version | Rterm --vanilla -q
> R.version
         _
platform i386-pc-mingw32
arch     i386
os       mingw32
system   i386, mingw32
status
major    1
minor    8.1
year     2003
month    11
day      21
language R

HTH,
Andy

> From: Pingping Zheng
> 
> Hi,
> 
> Is it possible to run R in command line to evalute R expressions
> and return results to stdout, something like
> 
>  >R CMD -e "R.version$minor"
> then you got return
>  >"8.1"
> 
> Or do a simple calculation
>  >R CMD -e "sin(1.2)"
>  >0.932039
> 
> Thanks.
> 
> -- 
> Pingping Zheng
> Department of Mathematics and Statistics
> Fylde College
> Lancaster University
> Lancaster LA1 4YF
> UK
> 
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