How could I write into the command prompt window of windows 7 with my matlab script?

Hello,

I'm trying to write a line into my command prompt window of Windows 7 with a matlab script, it can open it well but I didn't find how to write in it and simulate 'enter'. Would anyone know how to do that? Thank you in advance!

Lance_filename = 'Script.txt';
Input_filename = 'filename.txt';

fid = fopen(Lance_filename,'w');
script=sprintf('App.exe %s',Input_filename);
fwrite(fid,script,'char');
fclose(fid);

!cmd

%!cmd < Script.txt
%system('cmd.exe &');

Answer 1

[Albert]

ah yeah sure sorry:

Lance_filename = 'Script.txt';
Input_filename = 'filename.txt';
fid = fopen(Lance_filename,'w');
script=sprintf('App.exe %s',Input_filename);
fwrite(fid,script,'char');
fclose(fid);
system(sprintf('%s < "%s"', 'cmd.exe', Lance_filename));

[Walter Roberson]

I do not understand why you bother creating a file to use as input to cmd.exe when you could just system() the command directly. For example with what you have written you could use

system( sprintf('App.exe "%s"', Input_filename) );

and if it is waiting for any input to proceed you could

    system( sprintf('App.exe "%s" < NUL:', Input_filename) );

[Albert]

Ah yes it works fine now! Thank you!

Answer 2

[Walter Roberson]

You could use the Java Robot class, but you should probably instead use the technique I showed here

Answer 3

[Albert]

Thank you for your answer! The opening works but the written text is "Plusÿ?" instead of the string inside my 'Script.txt' file. How could I correct it?

[Walter Roberson]

We will need to see your code.