[R] User input when running R code in batch mode

[Bernd Kreuss]

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Kaushik Krishnan wrote:
> Is there any way to make R stop for the user to enter values when
> running in batch mode either by changing the way I invoke scan() or
> readLines() or by using any other function?

At least on linux this works:

bernd at t40:~/r-test $ cat test.R

readline2 = function(prompt=""){
        cat(prompt)
        readLines("stdin", 1)
}

print(readline2("enter a number: "))

bernd at t40:~/r-test $ Rscript test.R
enter a number: 42
[1] "42"


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