How to disable “Save workspace image?” prompt in R?

When I exit the interactive R shell, it displays an annoying prompt every time:

>
>
Save workspace image? [y/n/c]: n

I'm always answering "no" to it, because if I wished to save my work, I'd do that before trying to exit.

How to get rid of the prompt?

^{Note: see ?save.image}

Joshua Ulrich

You can pass the --no-save command line argument when you start R, or you can override the q function:

utils::assignInNamespace(
  "q", 
  function(save = "no", status = 0, runLast = TRUE) 
  {
    .Internal(quit(save, status, runLast))
  }, 
  "base"
)

Put the above code in your .Rprofile so it will be run on startup for every session.

Haven't found the easiest Linux solution yet :)

On ubuntu add the following line to your ~/.bashrc:

alias R='R --no-save'

Every time you start the R console with R, it will be passed the --no-save option.

Hugo Ideler

You can escape the "Save workspace image?" prompt with a Ctrl+D.

Thus, if you do Ctrl+D twice in interactive R, then you exit R without saving your workspace.

(Tested on Linux and OS X)

If you are using Rgui, right-click on the icon you use to start R and click on "Properties", and add --no-save to the command that starts R.

(from http://tolstoy.newcastle.edu.au/R/help/05/03/1115.html)

If you are using a different editor than Rgui, you have to pass --no-save to the R command line when starting R

You could easily add a qq() function to the .Rprofile file

 qq <- function(save="no") { q(save=save)}

I thought that the save option was available with options, but apparently Joshua's answer is best.

Overwrite default option for save argument of quit function

formals(quit)$save <- formals(q)$save <- "no"

put this line in .Rprofile

Edit: added q, so there is no prompt no matter which variant is used

flyingfinger

Get the best of both strategies given by mreq and BondedDust:

Default to not save by adding the following line to your ~/.bashrc:

alias R='R --no-save'

But give yourself an easy way to save on exit by adding this to ~/.Rprofile:

qs <- function(save="yes") { q(save=save)}

So now q() quits without saving (or prompting) but qs() will save and quit (also without prompting)

How about just avoiding the prompt by typing q('no') instead

wizmer

You can create an alias for the R command:

using bash: alias R='R --no-save'

using csh: alias R 'R --no-save'

If, like me, typing out a whole pair of brackets seems like too much effort to exit the repl you can try this:

exit <- structure(list(), class = "exit_command")

print.exit_command <- function(...) {
  q("no")  # exit without saving
}

This creates a new class, which causes R to exit when attempting to print said class. The upshot being that if you run exit in the R repl, the whole thing will exit (because it tries to print it).

NB: You can add it to ~/.Rprofile to load at the start of every session.

Bijoy J

If you feel adventurous enough, you could also edit the startup section at the end of /usr/bin/R, i.e. add --no-save to the exec calls. However, if you need to save your workspace, remember to save.image().

来源：https://stackoverflow.com/questions/4996090/how-to-disable-save-workspace-image-prompt-in-r

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