How to keep executed shell running after program exits

[via Digitalmars-d-learn]

On Thursday, 9 July 2015 at 02:33:23 UTC, tcak wrote:
> I have written a code to run gnuplot.
>
> [code]
> ...
> auto script = std.stdio.File("/tmp/waveletscript.gnuplot", "w");
>
> script.writeln("set term wxt 1; plot '/tmp/wavelet1.dat';");
> script.writeln("set term wxt 2; plot '/tmp/wavelet2.dat';");
> script.writeln("set term wxt 3; plot '/tmp/wavelet3.dat';");
>
> script.close();
> std.process.executeShell("gnuplot /tmp/waveletscript.gnuplot");
> ...
> [/code]
>
> I can see that gnuplot creates windows and plots, but then it 
> closes immediately. Anyway to execute the shell code in that 
> way that it detaches from running process? I do not want window 
> to be closing.
>
> -----
>
> BTW, as a tutorial to demonstrate use of gnuplot with D, is 
> there any place I can write an article?

I believe the reason is not because the parent exits, but that by 
default gnuplot exits as soon as it has finished executing its 
script. It has a `--persist` option that should prevent that.