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I want to capture the errors from a script into a file instead of to the screen.
In *nix, this is done with stderr redirection, usually
echo "Error" 2> errorfile.log How do I do it in a CMD script under Windows?
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The regular output is sent to Standard Out (STDOUT) and the error messages are sent to Standard Error (STDERR). When you redirect console output using the > symbol, you are only redirecting STDOUT. In order to redirect STDERR, you have to specify 2> for the redirection symbol.
To redirect the output of a command to a file, type the command, specify the > or the >> operator, and then provide the path to a file you want to the output redirected to. For example, the ls command lists the files and folders in the current directory.
The standard error is calculated by dividing the standard deviation by the sample size's square root. It gives the precision of a sample mean by including the sample-to-sample variability of the sample means.
That should work in Win32, too.
If you have already redirected stdout, and want stderr redirected to the same file, you must use the 2>& special form, rather than just specifying the same file twice. Otherwise you'll get a "file busy" error.
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For example:
PSKILL NOTEPAD >output.txt 2>&1 This will direct stdout and stderr to a file name output.txt.
See Underused features of Windows batch files for more details.
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