[R] Saving results from Linux command line

[Richard M. Heiberger]

There can't be functions in the R language to save the transcript
of a session.  In this respect R is a filter.  It takes an input
stream of text and returns an output stream of text.  R doesn't remember
the streams.  The Windows RGui remembers them.  The ESS *R* buffer remembers
them.  Any terminal emulator could in principle remember them.
R itself can't.