Overwriting a diary file

I want to save my output to .txt file. I have used

diary Output.txt
diary on
    some code
diary off

It saves diary file in same directory. But when I run the same code again it writes the command window output under the previously saved content instead of overwriting. I want to overwrite the previous content and make a file having only single output.

Answer 1

[Walter Roberson]

dfile ='Output.txt';
if exist(dfile, 'file') ; delete(dfile); end
diary(dfile)
diary on

[Andrew Robison]

I tried this, but the file is still not deleted. It doesn't have correct permissions.

[Walter Roberson]

If you do not have permissions to delete the file, there is not much that MATLAB can do about that.

[Andrew Robison]

My warning is:

Warning: File not found or permission denied

The file is clearly in the directory, but I can only delete the file after closing MATLAB.

[Walter Roberson]

It would probably be a good idea to fully qualify the diary file name, in case you are not in the same active directory that you think you are.

[Jimmy Neutron]

@Andrew Robison If you add

diary off

at the end of your .m file, everything works fine