Mathematica-6, Windows-10.

How do you get Mathematica to start a task in the background? Function

Run["START \"xxx\" /D " <> dirname <> " /MIN /B /WAIT xxx.EXE"]; 

does not work in spite of the /MIN option. Option /B starts the task without creating a cmd.exe window but the task starts in the foregound. On the other hand,

Run["START \"xxx\" /D " <> dirname <> " /MIN /WAIT xxx.EXE"]; 

does start the task in the background but it creates a blank cmd.exe window in the foreground.

What I want is the task to start without one or two windows popping into existence on top of whatever I happen to be doing at the time.

  • 5
    $\begingroup$ You might have a hard time finding people with Mathematica 6 to test this on :) $\endgroup$
    – ktm
    Commented May 6, 2019 at 16:51
  • 1
    $\begingroup$ Perhaps the Mathematica version is not relevant. Can anyone with any recent version of Mathematica advise what to do, please? $\endgroup$
    – Tony
    Commented Jun 2, 2019 at 23:48
  • $\begingroup$ Come on, guys! Wake up! Someone, somewhere must know how to resolve this problem one way or the other. It is driving me round the bend! $\endgroup$
    – Tony
    Commented Aug 30, 2019 at 15:28

1 Answer 1


The solution to your problem is the Mathematica internal function StartProcess.

Here is a usage example:

While[ProcessStatus[process] == "Running", Pause[0.1];];

Since I assume you want to work on the output of your external program, I added code to repeatedly pause mathematica's execution until the external program is finished.

This works in Mathematica 13.1 on Windows 11. I am not sure your problem has a solution without StartProcess[].


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