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executable in Matlab help

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Jeff Cichalski
Jeff Cichalski on 19 Jan 2016
Commented: Azade Jamshidi on 9 Dec 2018
Trying to run an executable dos program using Matlab with an input and have it continously inserting new inputs into the open exe program.
the line that opens the program is as follows:
dos(['Myexecutable.exe ' h.input_filename ' &']);
while isempty(dir(h.output_filename))
Every time this runs it opens a new window and never closes the old one. I need to eventually get this to iterate for an optimization command so I'll need the run the program while putting in thousands of inputs automatically. How can I insert an input in an already open .exe file?

Accepted Answer

Matthew on 19 Jan 2016
Edited: per isakson on 22 Aug 2016
There's a couple of ways to do this.
The way I've personally used most successfully is to use the System.Diagnostics.Process object. If it works, it tends to be more readable and accessible than directly making system calls.
proc = System.Diagnostics.Process;
proc.StartInfo.FileName = fullfile(exePath,exeName);
proc.StartInfo.Arguments = num2str(Port);
proc.Start(); % Start the process
To interface with the process, you can do a couple of different things:
1) My processes tend to be able to open TCP or UDP ports that I can communicate over, which is why my example passes a 'Port' argument into the process.
2) Alternatively you can use the process.standardinput streamwriter object if your proccess supports it.
3) The most work is to use robo calls - I haven't actually done this, but it looks like it may be feasible.
  1 Comment
Azade Jamshidi
Azade Jamshidi on 9 Dec 2018
I used follow commands for my case as you comment.
proc = System.Diagnostics.Process;
proc.StartInfo.FileName = fullfile(exePath,exeName);
proc.StartInfo.Arguments = num2str(port);
proc.Start(); % Start the process
It run my executable program. But it is important to me that my application (executable program) be closed after finishing run. There is any command for fixing this?

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