Check if R is running in RStudio

Question

I am looking for a way to test if R is being run from RStudio. For some reason I could find the answer on google yesterday but not today, but I think it had to do with testi

Answer 1

Neat solution is now available through the startup package via the is_rstudio_console function:

startup:::is_rstudio_console()
[1] TRUE

It may be worth adding that this function checks for two environment variables, RSTUDIO, which was mentioned in the answer by @krlmr and RSTUDIO_TERM that doesn't seem to be mentioned across the preceding answers at the moment.

function ()
{
    (Sys.getenv("RSTUDIO") == "1") && !nzchar(Sys.getenv("RSTUDIO_TERM"))
}