Dos Standard Error Redirection
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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 workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn unix redirect standard error more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags windows redirect standard error Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, linux redirect standard error helping each other. Join 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
Redirect Standard Error And Output To Different Files
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. 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 redirect standard error and output to /dev/null 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. >). Therefore 2> 2.txt works (or 2> &1) 2 > 2.txt does not; 2 > &1 does not. –The Red Pea Apr 3 '15 at 21:41 Reference document from Microsoft: support.microsoft.com/en-us/kb/110930 –Jonathan Benn Feb 3 at 18:58 | show 1 more comment up vote 101 down vote Anders Lindahl's answer is correct, but it should be noted that if you are redirecting stdout to a file and want to redirect stderr as well then you MUST ensure that 2>&1 is specified AFTER the 1> redirect, otherwise it will not work. REM *** WARNING: THIS WILL NOT REDIRECT STDERR
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Redirect Standard Error Bash
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How To Redirect Standard Error To Standard Output Using Linux Command
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 http://stackoverflow.com/questions/1420965/redirect-stdout-and-stderr-to-a-single-file other. Join them; it only takes 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 http://stackoverflow.com/questions/482678/how-to-capture-stderr-on-windows-dos in a CMD script under Windows? windows scripting batch-file 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 covere
Challenges C# Getting Started Examples Development Software Books KiXtart Getting Started Examples Links Tools Books Perl Getting Started Examples Links Tools Books PowerShell Getting Started Examples Links Tools Books Regular Expressions Getting Started Expressions http://www.robvanderwoude.com/battech_redirection.php Examples Links Tools Books Rexx Getting Started Examples OS/2 LAN Server Links Tools Books VBScript & WSH Getting Started VBScript Techniques Examples HTA & WSC Examples Links Tools Books Challenges Technologies WMI Getting Started Examples Links Tools Books ADSI Getting Started Examples Links Tools Books Silent Installs General Windows Installer Specific Software Software Requirements Hardware Requirements Books Batch Files Windows Resource Kits KiXtart Perl PowerShell Regular Expressions standard error Rexx VBScript & WSH C# WMI ADSI HTML, JavaScript & CSS Off-Topic Scripting Tools Batch Utilities Resource Kits Compilers Editors Code Generators Regular Expressions Automation Tools VBScript Add-Ons Visual Studio Printing Tools Inventory Tools Shell Extensions File Viewers Backup Security The making Of... Miscellaneous Tweaks Web Stuff Conversions My Photo Galleries About This Site Disclaimer News FAQ Search What's New Objective Site Policy Your Preferences Credits redirect standard error The Making Of... Contact Failed Mail Donate Batch How To ... Display & Redirect Output On this page I'll try to explain how redirection works. To illustrate my story there are some examples you can try for yourself. For an overview of redirection and piping, view my original redirection page. Display text To display a text on screen we have the ECHO command: ECHO Hello world This will show the following text on screen: Hello world When I say "on screen", I'm actually referring to the "DOS Prompt", "console" or "command window", or whatever other "alias" is used. Streams The output we see in this window may all look alike, but it can actually be the result of 3 different "streams" of text, 3 "processes" that each send their text to thee same window. Those of you familiar with one of the Unix/Linux shells probably know what these streams are: Standard Output Standard Error Console Standard Output is the stream where all, well, standard output of commands is being sent to. The ECHO command sends all its output to Standard Output. Standard Error is the stream where many (but not all) commands send their error messages. A