[R] Utility function to rotate log files?

[Don MacQueen]

I am wondering if there is a CRAN package that includes a utility 
function that will "rotate" file names, in the same sense that 
operating systems sometimes rotate log files. Or maybe there's 
something in base R.

That is, we have a set of file names, say file1, file2, file3, and 
when the function is called, file3 is deleted, file2 is renamed 
file3, file1 is renamed file2, and the name of file1 is returned to 
the user's script, which then writes to file1.

I've done some searching (RSiteSearch) but haven't found anything.

Thanks
-Don
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Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062