Using the echo command of Windows 7 SP1, how can I insert, in a text file, an environment variable (like %WINDIR%) without that it is first interpreted by the shell?
THANKS
BYE
06 May 2012 01:35
miskox
Joined: 28 Jun 2010 03:46 Posts: 92
Re: Echo command and environment variable
Code:
@echo %%windir%%>outputfile.txt
Hope this helps, Saso
06 May 2012 03:29
balubeto
Joined: 08 Dec 2011 12:14 Posts: 16
Re: Echo command and environment variable
miskox wrote:
Code:
@echo %%windir%%>outputfile.txt
Hope this helps, Saso
It not works. Why?
THANKS
BYE
06 May 2012 03:38
jeb
Expert
Joined: 30 Aug 2007 08:05 Posts: 567 Location: Germany
Re: Echo command and environment variable
It depends of the context.
If you want do it from a batch file then the solution of miskox works.
But from the cmd shell it doesn't work the same way.
There doesn't exist an escape possibility, but you can use a workaround.
Code:
echo %^windir%>outputfile.txt or echo %windir^%>outputfile.txt or echo %win^dir%>outputfile.txt
jeb
06 May 2012 04:28
abc0502
Joined: 26 Oct 2011 22:38 Posts: 1006 Location: Egypt
Re: Echo command and environment variable
what miskox said is right but remove one of the % like that
Quote:
echo %windir% >>outputfile.txt
06 May 2012 05:17
jeb
Expert
Joined: 30 Aug 2007 08:05 Posts: 567 Location: Germany
Re: Echo command and environment variable
Not really, it can only work if windir isn't defined. Try it with
Code:
echo %path%
And it will fail
06 May 2012 05:35
foxidrive
Joined: 10 Feb 2012 02:20 Posts: 2476
Re: Echo command and environment variable
balubeto wrote:
miskox wrote:
Code:
@echo %%windir%%>outputfile.txt
It not works. Why?
If you are using a CMD prompt then please say so, otherwise we will assume you are using batch files, where the command above works fine.
06 May 2012 05:48
trebor68
Joined: 01 Jul 2011 08:47 Posts: 98
Re: Echo command and environment variable
I hope that I understand you.
You will not write the value of the variable %WINDIR% in the file. You will write %WINDIR% in the file.
Code:
ECHO The windows folder will you find in ^%WINDIR^%.>outputfile.txt
The result is:
The windows folder will you find in %WINDIR%.
06 May 2012 09:04
jeb
Expert
Joined: 30 Aug 2007 08:05 Posts: 567 Location: Germany
Re: Echo command and environment variable
@trebor68: As I said before, the caret doesn't escape a percent sign, it's only a workaround that will work often, but not always.
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