You can try redirecting the handle of STDOUT to the handle of STDERR. In your child process, perform the echo with a handle redirect:

    :: Writes a message to stdout 
    :: (which in the parent is piped to stdout.log)
    echo message

    :: Now I want to write a message to stderr 
    :: (which in the parent is piped to stderr.log)
    echo message 1&gt;&amp;2

[Microsoft &#39;splainin it](https://web.archive.org/web/20171225062127/http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx?mfr=true)

Try `echo message 1&gt;&amp;2`

I&#39;ve just tried this and it seems to work correctly, even from within a batch file.

What are the roots in garbage collection?

I have read the definition of root as &quot;any reference that you program can access to&quot; and definition of live is that an object that is being used, which can be a local variable, static variable.

I m little confused with discriminating the difference between root and live objects.

What is path to root? How does root and live objects work?

Can someone elaborate ? 



What are the roots?

How can you rotate text for `UIButton` and `UILabel`? 90 degrees, 180 degrees.


How can you rotate text for UIButton and UILabel in Objective-C?

In a standard windows .cmd file I can send messages to stdout simply by doing:

    echo message

How can I send a message to stderr?


**Example**:

Let&#39;s say I have the script parent.cmd containing:

    call child.cmd 1&gt;&gt;stdout.log 2&gt;&gt;stderr.log

and a child containing:

    :: Writes a message to stdout 
    :: (which in the parent is piped to stdout.log)
    echo message
    
    :: Now I want to write a message to stderr 
    :: (which in the parent is piped to stderr.log)
    ???




How do I send a message to stderr from cmd?

In a standard windows .cmd file I can send messages to stdout simply by doing:
<pre><code class="hljs language-bash">echo message
</code></pre>
How can I send a message to stderr?
Example:
Let's say I have the script parent.cmd containing:
<pre><code class="hljs language-c">call child.cmd 1>>stdout.log 2>>stderr.log
</code></pre>
and a child containing:
<pre><code class="hljs language-lua">:: Writes a message to stdout 
:: (which in the parent is piped to stdout.log)
echo message

:: Now I want to write a message to stderr 
:: (which in the parent is piped to stderr.log)
???
</code></pre>

In my batch file, I call the PowerShell script like this:

    powershell.exe &quot;&amp; &quot;G:\Karan\PowerShell_Scripts\START_DEV.ps1&quot;

Now, I want to pass a string parameter to `START_DEV.ps1`. Let&#39;s say the parameter is `w=Dev`.

How can I do this?


Pass parameter from a batch file to a PowerShell script

Is it possible to set a statement&#39;s output of a batch file to a variable, for example:

    findstr testing &gt; %VARIABLE%
    
    echo %VARIABLE%

How to set commands output as a variable in a batch file

Can someone please explain how this works?

    @echo off
    REM Creating a Newline variable (the two blank lines are required!)
    set NLM=^
    
    
    set NL=^^^%NLM%%NLM%^%NLM%%NLM%
    REM Example Usage:
    echo There should be a newline%NL%inserted here.

emits:

    There should be a newline
    inserted here.
    

  

*from https://stackoverflow.com/questions/132799/how-can-you-echo-a-newline-in-batch-files/269819#269819*


Explain how Windows batch newline variable hack works

I made a bat file like:
&lt;pre&gt;mvn clean;
mvn package;&lt;/pre&gt;
but it doesn&#39;t work, only the first command is executed.

can someone help me?

How to execute more than one maven command in bat file?

I notice in most scripts, the two are usually in the same line as so:

    SETLOCAL ENABLEDELAYEDEXPANSION

Are the two in fact separate commands and can be written on separate lines?

Will setting `ENABLEDELAYEDEXPANSION` have an adverse effect on a script if it is set on the first lines of the script and not disabled until the end of the script?


How do SETLOCAL and ENABLEDELAYEDEXPANSION work?

How can I use spaces in the Windows Command Line?

    cmd /C C:\Program Files (x86)\WinRar\Rar.exe a D:\Hello 2\File.rar D:\Hello 2\*.*

How do I use spaces in the Command Prompt?

How can I set a variable with the current location? For instance, if I get in `c:\test` and want to set the variable to `test` and if I get inside `c:\test\test2` the variable will be set to `test2`.

I&#39;m thinking about using a `for` to get inside a lot of folders and check if some file exists, if the correct file exist I want to set the current folder to a variable so I can copy the path and copy the folder.

The main problem deals with copying the rest of the files is the same folder as the .inf file.

batch script to set a variable with the current path location

I have an application that only works properly when called from a windows command prompt. Something to do with the input/output streams.

So I can call it from a bash script by passing it as an argument to cmd.

cmd /c &quot;badapp&quot;   

This works fine - but occasionally badapp fails with network problems - and I get no feedback. Is there anyway to check the ERRORLEVEl from the bash script - or see the output from badapp on the terminal running the bash script? 

accessing ERRORLEVEL from bash script

I&#39;m fairly proficient at writing Batch scripts for Windows, but even after all these years how to correctly escape characters puzzles me.  It&#39;s especially difficult when trying figure out the correct way to escape a regular expression for use with sed. Is there any tool that can help me?  Perhaps something that allows me to paste in a &quot;normal&quot; string and it spits out the correctly escaped version of that string?

**Update:**   I&#39;m reluctant to give an example because I&#39;m not looking for an answer on how to escape one specific string. I&#39;m also not looking for a solution that will work for one specific app. I&#39;m looking for a tool that will help me get the escape syntax correct for every string I ever need to escape no matter what tool might be consuming it from the command line.  

That being said the regex I really want is 

    (^.*)(Form Product=&quot;)([^&quot;]*&quot;) FormType=&quot;[^&quot;]*&quot; FormID=&quot;([0-9][0-9]*)&quot;.*$

Take that true regex (i.e. unescaped as far as BATCH is concerned) and wrap it in some sed syntax such as `ssed &quot;s@ --- Insert escaped regex here ---      @http://psph/\1/\2@g&quot; &quot;%~1&quot;` and finally escape it... Again, is there any tool that can assist in escaping any string for use on the BATCH command line? 


p.s. There are so many exceptions to BATCH&#39;s escaping syntax that I&#39;ll even settle for a good cheat sheet.




Content Type	Original Author	Original Content on Stackoverflow
Question	steenhulthin	View Question on Stackoverflow
Solution 1 - Batch File	dolphy	View Answer on Stackoverflow
Solution 2 - Batch File	user7094	View Answer on Stackoverflow

How do I send a message to stderr from cmd?

Batch File Problem Overview

Batch File Solutions

Solution 1 - Batch File

Solution 2 - Batch File

How can you rotate text for UIButton and UILabel in Objective-C?

What are the roots?

Attributions