R.exe, Rcmd.exe, Rscript.exe and Rterm.exe: what's the difference?
I'm struggling with the different R executables. What is the difference between R.exe (with or without CMD B开发者_Go百科ATCH option), Rcmd.exe, Rscript.exe and Rterm.exe when running command line in a batch file?
And what is the difference between:
R.exe --no-environ --no-save < "c:\temp\R\test.R" > "c:\temp\R\out.txt" 2>&1
and
R.exe CMD BATCH --no-environ --no-save "c:\temp\R\test.R" "c:\temp\R\out.txt"
No difference in the output.
I cannot find anything about Rcmd.exe and Rscript.exe in the 3079 pages R reference manual.
By the way: I am using Windows.
Caveat: I work much more on Linux than Windows:
Rcmd.exe
is a historical left-over as back in the day, you could not doR CMD something
on Windows but needed the special executableRcmd.exe something
. That is no longer the case, yet it is provided for backwards compatibility.Rterm.exe
is also a holdover from the days whenRcmd.exe
was used. Can be ignored these days.R CMD BATCH
is a crutch that was needed in the days before littler andRscript.exe
, and similarly lingering from old docs and habits..Rscript.exe
is your friend for batch scripts; use it.- For everything else, there's
R.exe
.
Other than that, as Marek hinted, the reference manual is the wrong one among the six available manuals. Try the Introduction to R and the Installation and Admin manuals both of which have specific appendices for Windows.
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