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Re: st: getting Stata to wait until a shell command is finished

From   Richard Goldstein <>
Subject   Re: st: getting Stata to wait until a shell command is finished
Date   Wed, 19 Jun 2002 15:00:07 -0400

check the -pause- command


Gabriel Demombynes wrote:
> In the middle of my Stata program, I need to call a SAS batch routine (in
> Windows) and then have Stata wait until the SAS routine is finished, so that
> it can use part of the SAS output. However, when I use the shell command to
> call batch SAS, the SAS routine starts, and Stata doesn't wait. How can I
> get Stata to wait? I've tried using the sleep command, but then I have to
> guess how long SAS is going to take, and that time varies.
> I think what I need to do is have Stata check for the existence of the SAS
> output file as a condition for continuing, and have it continue to sleep if
> the file doesn't exist. I'm sure Stata must have a logical command that
> checks for the existence of a file, but I can't find it. I did find the
> confirm command, but I can't figure out how to use its output. Please help!
> Thanks,
> Gabriel
> Gabriel Demombynes
> Ph.D. Candidate
> Department of Economics
> University of California-Berkeley
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