while rstudio server pro has a way to easily manage r versions, open source does not. from the documentation it is unclear how this is done -- documentation reads:
If you want to override which version of R is used then you can set the
RSTUDIO_WHICH_R environment variable to the R executable that you want to run against. For example:
Not that in order for RStudio to see this environment variable when launched from the Ubuntu desktop Applications menu (as opposed to from a terminal) it must be defined in the
the question is does one define this in ~./profile?