[R] deleting a directory

[Sundar Dorai-Raj]

Hi, all,

I'm looking a utility for removing a directory from within R. Currently, 
I'm using:

foo <- function(...) {
   mydir <- tempdir()
   dir.create(mydir, showWarnings = FALSE, recursive = TRUE)
   on.exit(system(sprintf("rm -rf %s", mydir)))
   ## do some stuff in "mydir"
   invisible()
}

However, this is assumes "rm" is available. I know of ?dir.create, but 
there is no opposite. And ?file.remove appears to work only on files and 
not directories.

Any advice? Or is my current approach the only solution?

 > R.version
                _
platform       i386-pc-mingw32
arch           i386
os             mingw32
system         i386, mingw32
status
major          2
minor          3.1
year           2006
month          06
day            01
svn rev        38247
language       R
version.string Version 2.3.1 (2006-06-01)


Thanks,

--sundar