Comments on: Redirecting Output to a File in Windows Batch Scripts

By: Josh

Josh — Wed, 08 Feb 2012 15:54:01 +0000

Tony, I’m not sure but I don’t think Windows provides that kind of encapsulation of the output.

By: Josh

Josh — Wed, 08 Feb 2012 15:52:17 +0000

This is because the plain date command echoes the date in a format that is not file-friendly, such as “Wed 02/08/2012″. When I’m generating a filename based on date, I do something like this:

%date:~10,4%-%date:~4,2%-%date:~7,2%-%date:~0,3%

Which would generate something comparable to this: “2012-02-08-Wed” which is friendly for a filename.

Hope this helps.

By: Mark

Mark — Wed, 08 Feb 2012 12:56:25 +0000

What I’m trying to do is very similar but I want to use commandline variable to name the file. What I’m trying to do is something like:

chkdsk h: > %date%.txt

But this doesn’t work

Any Ideas??

By: Tony

Tony — Thu, 26 Jan 2012 23:34:41 +0000

In unix i could begin a script with:
exec >log.out 2>&1
This would redirect all output from the scipt to the log file. Is there a way to do this in a bat file? I don’t want to have to put the >log.out 2>&1 after EVERY command in the bat file!

By: ahmed

ahmed — Wed, 21 Dec 2011 10:07:43 +0000

i tried this command:
-
echo xcopy /y /e /r /k /h D:\z d:z >D:\log.txt >>copylog.txt
-
result on copylog.txt:
-
xcopy /y /e /r /k /h D:\z d:z
-
i want this for the result on copylog.txt:
-
xcopy /y /e /r /k /h D:\z d:z >D:\log.txt
-

any ideas?

By: Seth Wegner

Seth Wegner — Fri, 16 Dec 2011 21:33:08 +0000

just what I needed and Found after googling as well. Thanks!

By: please help with linux with redirecting errors and output? | Froggy IT Solutions

Thu, 13 Oct 2011 08:43:07 +0000

[...] if it works for each command, the way you are trying to do it Add your own answer in the comments!Question by CH: please help with linux with redirecting errors and output? I'm trying to redirect th…d nothing has been placed in x3. When I make other errors nothing is put in x3 and they still show [...]

By: Josh

Josh — Sun, 09 Oct 2011 03:55:05 +0000

Haha no worries

By: Adam

Adam — Sat, 08 Oct 2011 13:06:03 +0000

Scratch that. Just worked it out – isn’t it always the way that you realise you did something stupid, right after posting it to the world?

By: Adam

Adam — Sat, 08 Oct 2011 13:00:52 +0000

Hi there. I seem to have taken a wrong turn trying to implemend this and have got myself into a real bind. I created a simple script to run defrag.exe and pipe results to a logfile. So far so good. I then looked for ways to optionally display the output instead of piping to logfile, and this seemed to work. I changed the script as per below, and it worked but got “2>&1 unexpected at this point” at the end of the script. No biggie, only now when I run *any* script, it churns out output from my defrag script. Any thoughts on where I went wrong, and how to fix it?

Many thanks,
Adam

—

@echo off
:: Defrag script

c:
cd \

set output=c:\_scripts\defrag.log
if “%1″ == “con” set output=con

echo Defragging your hard drive, please allow to run..
echo. >> %output%
echo ——————————————————— >> %output%
echo Start defrag on %date% at %time% >> %output%
echo. >> %output%
echo Defragging C: >> %output%
echo. >> %output%
defrag c: -f -v 1>> %output% 2>&1
echo. >> %output%
echo Defragging E: >> %output%
echo. >> %output%
defrag e: -f -v 1>> %output% 2>&1
echo. >> %output%
echo End defrag on %date% at %time% >> %output%
:end

By: John

John — Thu, 11 Aug 2011 19:37:34 +0000

have tried the above (not http://www.biterscripting.com/) and have an issue, which i suspect is with the application. I am creating a diagnostic script using WINDUMP to capture FTP traffic for testing servers.
I want to get the NIC device so that I can then set a variable to it, then use it to enable WINDUMP logging. I have tried the following command line (hybrid bash script run at CMD):
windump -d | grep Device > \temp\x 2>&1
windump: listening on \Device\NPF_{AAAAAAAA-27B3-0000-A8D8-EA0F6634C14A}

I want to then do DOS for loop, parse the above from \temp\x and get the device name.

the message is put on the screen, but I doubt it is going to STDOUT or STDERR. the \temp\x file is empty. I suspect it is writing to an non standard channel.

any ideas?

By: Satish

Satish — Fri, 05 Aug 2011 22:47:54 +0000

helpful indeed , Thanx Folks

By: Josh

Josh — Tue, 17 May 2011 17:07:45 +0000

@Guido, right, thanks for pointing him to that. I’m glad this page is turning out to be useful for many people.

By: GuidoDG

GuidoDG — Tue, 17 May 2011 06:19:14 +0000

Hi Bolt, I had the same question. See the comments starting from 22 April 2009 for the solution. Regards.

By: z bolt

z bolt — Mon, 16 May 2011 22:54:52 +0000

It gave me a good start. But, is there a way to echo output to the screen and also to the file?
Basically, my batch file lets prints messages on console and lets user enter Y/N options and does some stuff. I want to capture all the messages and user’s input plus the stdout of commands executed in the batch file. Is it possible?
Thanks for the article!!

By: arun

arun — Tue, 19 Apr 2011 23:18:39 +0000

Could you give an idea how I could redirect output log to a new file every time I run a batch script
Regards

By: Josh

Josh — Thu, 31 Mar 2011 19:51:48 +0000

Interesting. Glad it helped!

By: Jason

Jason — Wed, 30 Mar 2011 19:53:28 +0000

Thank you sooo much for this! Apparently ffprobe (info about mpeg files) only outputs to stderr, was driving me crazy when I couldn’t figure out why I couldn’t direct ouput to a file!

By: vani

vani — Wed, 16 Mar 2011 17:44:57 +0000

Hey, I’m completely new at this and I was wondering if there is a way that I would be able to redirect the log files in a directories standard output and standard error into and excel spreadsheet in anyway?

Please remember don’t use too advanced of terminology as I just started using shell scripts yesterday for the first time.

Thank you!

By: Josh

Josh — Wed, 09 Mar 2011 17:21:22 +0000

Mark, good question. Here's the answer on this post: Redirecting Errors to a File in Windows Batch Scripts.