Dos Command Line Redirect Standard Error
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the command line redirect output to file and console workings and policies of this site About Us Learn more about Stack
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Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs command line redirect all output to file Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join https://support.microsoft.com/en-us/kb/110930 them; it only takes a minute: Sign up Redirect stdout and stderr to a single file up vote 358 down vote favorite 97 I'm trying to redirect all output (stdout + stderr) of a DOS command to a single file: C:\>dir 1> a.txt 2> a.txt The process cannot access the file because it is being used by another process. http://stackoverflow.com/questions/1420965/redirect-stdout-and-stderr-to-a-single-file Is it possible, or should I just redirect to two separate files? windows command-line cmd pipe share|improve this question edited Oct 9 '15 at 19:39 Peter Mortensen 10.2k1369107 asked Sep 14 '09 at 11:20 ripper234 66.4k165464747 2 TechNet: Using command redirection operators (answers this better than any of the answers here). –Martin Prikryl May 11 at 6:09 add a comment| 6 Answers 6 active oldest votes up vote 553 down vote accepted You want: dir > a.txt 2>&1 share|improve this answer answered Sep 14 '09 at 11:23 Anders Lindahl 24.7k55275 10 thanks for this, didn't know that this unix shell syntax works for DOS too! –chaindriver Aug 14 '12 at 17:00 11 this is great for hiding all output.. net stop w3svc >NUL 2>&1.. thanks! –wasatchwizard Apr 4 '13 at 17:55 1 @wasatchwizard Ithink I had trouble with that, but >NUL 2>NUL worked fine –FrinkTheBrave Aug 4 '14 at 8:24 4 If there is a Handle, there cannot be a space between the Handle (i.e. 2) and the redirect operator (i.e.
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and http://stackoverflow.com/questions/482678/how-to-capture-stderr-on-windows-dos policies of this site About Us Learn more about Stack Overflow the http://www.robvanderwoude.com/redirection.php company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes command line a minute: Sign up How to capture stderr on Windows/DOS? up vote 34 down vote favorite 10 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? windows scripting batch-file command line redirect cmd stderr share|improve this question edited Oct 9 '15 at 19:42 Peter Mortensen 10.2k1369107 asked Jan 27 '09 at 8:46 mik 4932914 add a comment| 2 Answers 2 active oldest votes up vote 43 down vote accepted 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. share|improve this answer answered Jan 27 '09 at 12:49 aphoria 12.4k34056 7 If you want them redirected to separate files, you can do mycommand >stdout.txt 2>stderr.txt –Kip Oct 24 '12 at 16:15 add a comment| up vote 19 down vote 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. share|improve this answer answered Jan 27 '09 at 8:50 unwind 254k38330460 This is also covered in Redirect stdout and stderr to a single file. –Peter Mortensen Oct 9 '15 at 20:50 add
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