How do I run a MatLab script via the windows command prompt such that it does not output back to the terminal when using the -batch argment?

I am trying to run a matlab script via the windows command prompt using the -batch argument, but in a manner where it does not log text back to the terminal (stdout and stderr). I tried appending with >nul to discard the output, but matlab still logged to the output. I dont neccesarily need to use the -batch argument, but I cannot see another method to run a matlab script silently (except for the writing back to output issue) with the remaining R2022b list of optional arguments. Any solution for this would be greatly appreciated.

Thanks in advance.

[Rik]

If you can edit the script it would be the easiest if you remove any printing commands there.

Answer 1

[dpb]

stderr is the second output stream and its redirection symbol syntax is "2>"

To redirect both to same place use

> nul 2>&1

The first directs stdout to nul; the second redirects stderr (>2) to io stream 1 which has been redirected to nul

I think one can also use the more verbose

> nul 2> nul

to accomplish the same thing in a more human-legible format.

[Walter Roberson]

I do not know about redirection to nul in particular. If the output were being redirected to a file, then the 2>&1 form needs to be used or else Windows will complain the file is already in use. That might possibly not be the case for NUL:

https://stackoverflow.com/questions/1420965/how-to-redirect-windows-cmd-stdout-and-stderr-to-a-single-file

[dpb]

Microsoft Windows [Version 10.0.19044.2486]
(c) Microsoft Corporation. All rights reserved.

C:\Users\Duane>dir fred.tmp
 Volume in drive C is Windows
 Volume Serial Number is 68A4-CD84

 Directory of C:\Users\Duane

File Not Found

C:\Users\Duane>dir fred.tmp >nul
File Not Found

C:\Users\Duane>dir fred.tmp >nul 2>nul

C:\Users\Duane>

Windows seems perfectly happy with the bit bucket redirection either way. Not terribly surprising with a physical file.