[R] Is there a sleep, wait, pause function?

[Henrik Bengtsson]

Is there a (cross-platform) sleep/pause/wait function in [R]? 

I want to poll a file once in a while to see if and external process is
ready. Between each poll [R] should consume as little CPU as possible.

Thanks

Henrik Bengtsson

Dept. of Mathematical Statistics @ Centre for Mathematical Sciences 
Lund Institute of Technology/Lund University, Sweden (+2h UTC)
+46 46 2229611 (off), +46 708 909208 (cell), +46 46 2224623 (fax)
h b @ m a t h s . l t h . s e, http://www.maths.lth.se/~hb/


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