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To run the netsh routing dump command and then send the command output to Route.cfg, type:netsh routing dump>c:\route.cfgThe > operator opens the specified file with write-only access. Panthers_DenTopic StarterRookie How to capture batch file error msg's? « on: May 11, 2010, 08:32:15 AM » So in my batch file, I can capture the errorlevel (the error number), but Old Forum Search | Forum Rules Copyright © 2013 Computer Hope All rights reserved. Do Matrix Multiplication! http://bluefoxta.com/batch-file/batch-file-output-error-stream.php

But now, try these: VER|TIME>LOG1.LOG
>LOG1.LOGVER|TIME As you will notice, in the second line, it is the output of VER that gets redirected to LOG1.LOG!! What 2>&1 does, is merge Standard Error into the Standard Output stream, so Standard output and Standard Error will continue as a single stream. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed This is a fine demonstration of only Standard Output being redirected to the NUL device, but Standard Error still being displayed.

Batch File Redirect Output To File And Screen

It is said Console cannot be redirected, and I believe that's true. Now make a typo again: EHCO Hello world 2>NUL What did you get? Thanks though :) –Dempsey FoxDie Van Assche Jan 4 '14 at 12:33 add a comment| up vote 1 down vote In your question, you mention: "...

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 Multiplication Formatting Did Kuntī deliver Karṇa through her womb? Use >CON to send text to the screen, no matter what, even if the batch file's output is redirected. Batch File Log Output With Date BC_ProgrammerMastermind Typing is no substitute for thinking.Thanked: 959 Certifications: List Computer: Specs Experience: Beginner OS: Windows 7 Re: How to capture batch file error msg's? « Reply #5 on: May 11,

Ok, now that we get the idea of this concept of "streams", let's play with it. Batch File Logging For example, the following command sorts a directory:dir | sortIn this example, both commands start simultaneously, but then the sort command pauses until it receives the dir command's output. Also known as a pipe. http://www.robvanderwoude.com/redirection.php armor proficiency feats Noisy depth of field 5 Favorite Letters Why don't my users have separate desktops in Windows 10?

To get rid of screen output sent directly to the Console, either run the program in a separate window (using the START command), or clear the screen immediately afterwards (CLS). Batch File Output To Text File With Timestamp commandN ) Another good way @echo off call :sub >output.txt exit /b :sub command1 command2 ... To specify which handle you want to use, type the number of the handle before the redirection operator. Purpose of pins on side edge of QFN package How do you combine the elements in Sheldon's T-shirt?

  1. Much better, isn't it?
  2. This is what happens when I run this batch script: C:\>a.cmd Command: "dir /b a*" a.cmd Command: "dir /b non-existant-file" File Not Found Notice that in the test script, the first
  3. Not the answer you're looking for?
  4. That's because >NUL redirects all Standard Output to the NUL device, which does nothing but discard it.
  5. Did the Chinese population really resort to cannibalism during the reign of Mao?
  6. Use >logfile.txt2>errorlog.txt to redirect success and error messages to separate log files.

Batch File Logging

ECHO By the way, did I warn you that the keyboard doesn't work either? To capture "normal output" and "error messages", you need to also capture the STDERR stream, which is indicated by the "2" in "2>&1" in the command here: C:\>a.cmd > log.txt 2>&1 Batch File Redirect Output To File And Screen Sample a random non-decreasing sequence A 17th century colloquial term for children, in the way we use 'kids' today Two resistors in series Why is engine displacement frequently a few CCs Batch File Output To Text File Append Browse other questions tagged command-line logging cmd.exe or ask your own question.

Panthers_DenTopic StarterRookie Re: How to capture batch file error msg's? « Reply #6 on: May 12, 2010, 05:40:15 AM » Quote from: BC_Programmer on May 11, 2010, 08:24:32 PMprogram.exe 2>&1 | have a peek at these guys In this case, we could also have used test.bat>NUL2>NUL This redirects Standard Output to the NUL device and Standard Error to the same NUL device. Logged Where's MagicSpeed?Quote from: 'matt'He's playing a game called IRL. For example, to send dir output to File.txt and send the error output to File.txt, type:dir>c:\file.txt 2>&1When you duplicate a handle, you duplicate all characteristics of the original occurrence of the Redirect Batch File Output To Text File

asked 2 years ago viewed 9711 times active 1 month ago Blog How We Make Money at Stack Overflow: 2016 Edition Linked 0 windows schedule command to run regularly Related 1reading This can be selected by launching CMD /A or CMD /U With the default settings a UCS-2 file can be converted by redirecting it (note it's the redirection not the TYPE/MORE In Windows XP the result is no text on screen and file.txt containing the line Helloworld2, including the trailing "2" (CMD.EXE interprets it as ECHOHelloworld2>file.txt). check over here Try this command: ECHO Hello world 2>NUL What you should get is: Hello world You see?

ECHO Tee.bat, Version 2.11a for Windows NT 4 / 2000 / XP ECHO Display text on screen and redirect it to a file simultaneously ECHO. Batch Redirect All Output To File This is a fine demonstration of only Standard Output being redirected to the NUL device, but Standard Error still being displayed. In most cases the Exit Code is the same as the ErrorLevel Numeric handles: STDIN = 0 Keyboard input STDOUT = 1 Text output STDERR = 2 Error text output UNDEFINED

This can be useful for error messages.

What is the role of conjectures in modern mathematics? How does Professor McGonagall know about the Golden Trio's conversation? You can also redirect to a printer with > PRN or >LPT1 Multiple commands on one line In a batch file the default behaviour is to read and expand variables one Cmd Redirect Output To File Redirecting Standard Error in "true" MS-DOS (COMMAND.COM) isn't possible (actually it is, by using the CTTY command, but that would redirect all output including Console, and input, including keyboard).

Make loop more efficient How to politely decline compensation? If you specify a handle, Cmd.exe duplicates the handle you specify onto the existing handle in the system.For example, to open File.txt as input read to handle 0 (that is, STDIN), The general idea was this: CTTY NUL ECHO Echo whatever you want, it won't be displayed on screen no matter what. http://bluefoxta.com/batch-file/batch-file-output-error-code.php Redirecting Standard Error in "true" MS-DOS (COMMAND.COM) isn't possible (actually it is, by using the CTTY command, but that would redirect all output including Console, and input, including keyboard).

In my case I would need it executed and then logged into a file for later reference. ECHO I suppose that's why CTTY is no longer available on Windows systems. asked 3 years ago viewed 27397 times active 2 years ago Blog How We Make Money at Stack Overflow: 2016 Edition Related 6How can I launch batch files from another batch MyBatchFile.bat: @echo off REM setlocal enabledelayedexpansion ( echo line one echo line two echo line three ) > "%~dpn0.txt" share|improve this answer edited Jul 17 '13 at 14:55 answered Jul 17

Sometimes the lines can be padded with spaces to align all redirection signs and make the batch file more readable. Note however, that a space between an ECHO command and a > will be redirected too. The result will be an empty logfile. Next, run: test.bat 2> NUL and you should see: C:\>test.bat This text goes to Standard Output This text goes to the Console C:\>_ We redirected Standard Error to the NUL device,

To make things worse, each device exists in every directory on every drive, so if you used redirection to NUL in, say, C:\ and after that you use it again in Display & Redirect Output On this page I'll try to explain how redirection works. commandN share|improve this answer answered Dec 10 '13 at 1:17 dbenham 79.2k11116183 Thanks, that really helped. Also, please go easy on me since this is my first answer posted on SO. :) To redirect the output to a file using a dynamically generated file name, my go-to

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Word to describe object that can be physically passed through based on MAC address -- why not "based on MAC addresses"? Redirection from a device is not always possible. (2) Redirection to the NUL device is often used to hide standard output, instead of displaying it on screen: COPY *.* A: Redirect errors to a separate error log file: Run: test.bat > testlog.txt 2> testerrors.txt and you'll get this text on screen (we'll never get rid of this line on screen, as