Redirecting ray3 output


ray3.exe outputs to STDERR, so you cannot simply do this:

ray3 -v 6 test.mi > out.txt

You have to do something like this:

ray3 -v 6 test.mi 2>out.txt

In the above command, 2>out.txt redirects STDERR to the file out.txt.

Or you can do this, which redirects all output (STDOUT and STDERR) to out.txt:

ray3 -v 6 test.mi >out.txt 2>&1

References:

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