DISQUS

gmartin · 5 years ago

This tip is good but it only goes so far. It will redirect STDOUT to null. Errors will still be displayed. As an example, run dir badfile.txt >nul and you will still see "File not found" displayed. That's because errors are written to STDERR

To redirect STDERR to nul as well, try this:

dir badfile.txt > nul 2&>1

Of course you may want to see the errors. So a better tack to take could be to write to a log file

dir badfile.txt >log.txt 2&>1

\Greg
qmchenry · 5 years ago

Greg,

That is a fantastic piece of knowledge. I've been redirecting stderr that way in unix for many years, but I've never tried it in dos. I wouldn't have thought to try. I also didn't know there was an eqivalent to /dev/null in dos. Great stuff!

Quinn
timlarsen · 5 years ago

The actual syntax (at least on Win2K) is

dir badfile.txt > null 2>&1

Note the position of the ampersand.
Ghanny · 5 months ago

For standard output also try "@echo off" at the start of the batch file. This will suppress echoing all the input commands.
X · 5 months ago

<script language="javascript">window.alert('Nothing Special')</script>