commandN >>output.txt A better way - easier to write, and faster. @echo off >output.txt ( command1 command2 ... To use more than one filter in the same command, separate the filters with a pipe (|). But the next one is new: test.bat > NUL 2>&1 and you should see: C:\>test.bat This text goes to the Console C:\>_ This time we redirected both Standard Output and Standard Dempsey command-line logging cmd.exe share|improve this question edited Jul 10 '14 at 8:41 Awal Garg 235218 asked Jan 4 '14 at 11:07 Dempsey FoxDie Van Assche 2615 migrated from serverfault.com Jan his comment is here
Browse other questions tagged windows command-line batch batch-file or ask your own question. 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). Logged SidewinderGuruThanked: 123 Experience: Familiar OS: Other Re: How to capture batch file error msg's? « Reply #7 on: May 12, 2010, 10:30:41 AM » Quote from: Panthers_Den on May 12, 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
The batch file would look like this: command > logfile and the command line would be: START batchfile Some "best practices" when using redirection in batch files: Use >filename.txt 2>&1 to asked 2 years ago viewed 67365 times active 2 months ago Blog How We Make Money at Stack Overflow: 2016 Edition Upcoming Events 2016 Community Moderator Election ends in 5 days Not the answer you're looking for?
That is what you see on screen as normal messages, 2> or 2>> will output error messages. Probably the most familiar example is MORE: DIR /S | MORE where the MORE command accepts DIR's Standard Output at its own Standard Input, chops the stream in blocks of 25 Logged gplApprentice Thanked: 27 Re: How to capture batch file error msg's? « Reply #1 on: May 11, 2010, 09:15:09 AM » yes, it is more than possible, it is easy!the Batch File Log Output With Date echo Command: "dir /b non-existant-file" dir /b non-existant-file echo.
ECHO I suppose that's why CTTY is no longer available on Windows systems. Batch File Logging Besides being used for redirection to the NUL device, with CTTYCOM1 the control could be passed on to a terminal on serial port COM1. Note however, that a space between an ECHO command and a > will be redirected too. 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
Make sure you place the redirection "commands" in this order. Batch File Output To Text File With Timestamp armor proficiency feats Noisy depth of field 5 Favorite Letters Why don't my users have separate desktops in Windows 10? Note however, that a space between an ECHO command and a > will be redirected too. For example: SET /P _cost="Enter the price: " & ECHO %_cost% This behaviour can be changed using SETLOCAL EnableDelayedExpansion Creating a new file Create empty files using the NUL device: Type
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). More Help Use >logfile.txt2>errorlog.txt to redirect success and error messages to separate log files. Batch File Redirect Output To File And Screen And some, not many, commands send their output to the screen bypassing Standard Output and Standard Error, they use the Console. Batch File Output To Text File Append The input or output stream location is referred to as a handleThe following table lists operators that you can use to redirect command input and output streams.Redirection operatorDescription>Writes the command output
If that is not what you meant, then it would have probably helped if that was explained better, perhaps with some sample output. this content 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 For example, the following command redirects handle 2 (that is, STDERR) into handle 1 (that is, STDOUT):1<&2Duplicating handles The & redirection operator duplicates output or input from one specified handle to In Windows NT4 and later (CMD.EXE) and in OS/2 (also CMD.EXE) Standard Error can be redirected by using 2> instead of > A short demonstration. Redirect Batch File Output To Text File
Now try this (note the typo): EHCO Hello world>NUL The result may differ for different operating system versions, but in Windows XP I get the following error message: 'EHCO' is not In any case, I'm posting this answer in case there are others who find this question/answer helpful. The result will be an empty logfile. http://objectdevcorp.com/batch-file/batch-file-output-error-message.html What happens after reaching 99x items of a kind?
Unfortunately, it can be done only in the old MS-DOS versions that came with a CTTY command. Batch Redirect All Output To File Copy the following code into Notepad and save it as "test.bat": @ECHO OFF ECHO This text goes to Standard Output ECHO This text goes to Standard Error 1>&2 ECHO This text However, if you were to do this with ECHO command lines, the spaces would really be ECHOed, which is not always convenient, to say the least.
You haven't even specified an operating system! –Michael Hampton Jan 5 '14 at 23:50 add a comment| 3 Answers 3 active oldest votes up vote 1 down vote This script will You can use this operator with most commands. commandN share|improve this answer answered Dec 10 '13 at 1:17 dbenham 79.2k11116183 Thanks, that really helped. Cmd Redirect Output To File 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
Much better, isn't it? That's because we redirected the Standard Error stream to the NUL device, but the ECHO command sent its output to the Standard Output stream, which was not redirected. If you specify a handle, Cmd.exe duplicates the file onto the existing handle.To duplicate a user-defined handle 3 into handle 1, type:>&3To redirect all of the output, including handle 2 (that http://objectdevcorp.com/batch-file/batch-file-output-error-stream.html How, for example, are you going to append the following command line to a temporary batch file: DIR | FINDSTR /R /I /C:" 0 Dir(s)" >NUL The following code will definitely