Just don't load them -- start the session with --vanilla.
And that is in the rw-FAQ if you want more details.
On Tue, 11 Nov 2003, John Wilkinson wrote:
> In order to update the packages from Cran, it is first necessary
> to unload all packages from the R Console.
On Windows, since you mention a console?
> Can anyone, please, inform me, how to unload all loaded packages with one
> command?
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
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