This will only work in OS/2 and NT, not in MS-DOS. share|improve this answer answered Sep 16 at 18:20 Anthony 565 add a comment| up vote 0 down vote There is a cool little program you can use to redirect the output It will only do what it is supposed to do when placed at the end of the command line (as Jennie Walker pointed out to me) or right before the next If cookies are made with enough sugar, will they just be chewy caramel? his comment is here
I can assure you I did try! Unfortunately, it can be done only in the old MS-DOS versions that came with a CTTY command. Sometimes the lines can be padded with spaces to align all redirection signs and make the batch file more readable. To capture the standard output data call BeginOutputReadLine. http://www.robvanderwoude.com/battech_redirection.php
Starting the process is the same as when not reading the output streams; you simply call the Start method. Since DOS treats devices like AUX, COMn, LPTn, NUL and PRN as files, opening a device will claim one file handle. 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 However, I would like to have the entire output to also be logged into a .txt or .log file.
ECHO Written by Rob van der Woude ECHO http://www.robvanderwoude.com ECHO Modified by Kees Couprie ECHO http://kees.couprie.org ECHO and Andrew Cameron share|improve this answer answered Apr 24 '15 at 12:06 AquaAlex 189212 There are tricks to decrease the number of file handles lost by redirection: redirect to (one single temporary) file instead of NUL specify a directory if you have to redirect to Browse other questions tagged command-line logging cmd.exe or ask your own question. Batch File Log Output With Date Different RAID settings for different folders on the same logical drive I was allowed to enter the airport terminal by showing a boarding pass for a future flight.
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 This may seem quite a challenge. Differences between Interrupts and sampling for hardware button? http://stackoverflow.com/questions/20484151/redirecting-output-from-within-batch-file For "real" (or "legacy") DOS, (ab)use the PROMPT codes $L, $G and $B to display and/or redirect pipe and redirection symbols.
Which current networking protocol would be the optimal choice for very small FTL bandwidth? Batch File Output To Text File With Timestamp You can follow any responses to this entry through the RSS 2.0 feed. Display & Redirect Output On this page I'll try to explain how redirection works. For an overview of redirection and piping, view my original redirection page.
Like this:Like Loading... This could be useful when prompting for input even if the batch file's output is being redirected to a file. Batch File Redirect Output To File And Screen commandN >>output.txt A better way - easier to write, and faster. @echo off >output.txt ( command1 command2 ... Batch File Output To Text File Append using System.Diagnostics; We can now create the start information to launch our batch file.
It is not ok to use spaces in >> or 2> or 2>&1 or 1>&2 (before or after is ok). this content Run: test.bat > NUL and you should see: C:\>test.bat This text goes to Standard Error This text goes to the Console C:\>_ We redirected Standard Output to the NUL device, and When set to true, this property indicates that the process will be started by the Windows shell. Received: Hello! Redirect Batch File Output To Text File
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. 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 Starting a new CMD shell also has a small (likely unnoticable) effect on performance. weblink This will capture the script output to the file named "log.txt" as before, and it will also display the output to the screen while the script is running: C:\>a.cmd 2>&1 |
A common technique is to use > to create/overwrite a log file, then use >> subsequently to append to the log file. Cmd Redirect Output To File The ECHO command sends all its output to Standard Output. Add the following code to the end of the Main method.
And some, not many, commands send their output to the screen bypassing Standard Output and Standard Error, they use the Console. But now, try these: VER|TIME>LOG1.LOG
If you use a different path or file name you'll need to update the code accordingly. @echo off echo Hello! 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", Redirection A very common task in batch files is sending the output of a program to a log file. http://objectdevcorp.com/batch-file/batch-file-output-error-message.html 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).
If I run the script and use redirection (">") to capture the output, I will see this C:\>a.cmd > log.txt File Not Found C:\>type log.txt Command: "dir /b a*" a.cmd Command: Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. (LogOut/Change) You are 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 Besides being used for redirection to the NUL device, with CTTYCOM1 the control could be passed on to a terminal on serial port COM1.
With the NUL device that's no problem, but when redirecting to a file one of the redirections will lock the file for the other redirection. Or is it inevitable once a certain point in development is reached? Nothing That's because the error message was sent to the Standard Error stream, which was in turn redirected to the NUL device by 2>NUL When we use > to redirect Standard There are four properties that we need to set: FileName.
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 It's also not running a script, but logging the output of the commands you enter and omits the critical information of how to stop the madness ... –Sven Jan 4 '14 In my case I would need it executed and then logged into a file for later reference. 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
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