?
Solved

Within a batch file, echo the literal string %something% to another file, rather than the variable expanding

Posted on 2009-05-20
10
Medium Priority
?
1,173 Views
Last Modified: 2012-05-07
Hi,

From a batch file, I was wondering how I can echo the literal string %something% to a file, rather than the variable expanding and the value of the variable being echoed to the file.

Thanks
Matthew
0
Comment
Question by:Matthew Millers
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
  • 2
  • +1
10 Comments
 
LVL 14

Expert Comment

by:yehudaha
ID: 24431246
like this ?

echo %variable% >> log.txt
0
 
LVL 16

Author Comment

by:Matthew Millers
ID: 24431385
Not really, that would either put nothing in the output file or expand the variable %variable% and put the current value into the output file.

What i actually want to do is literally output %variable% into the output file.

So....
echo %variable% >> log.txt

log.txt would contain
%variable%

Rather than
ValueofVariable
0
 
LVL 16

Author Comment

by:Matthew Millers
ID: 24431437
Hi,

Worked it out.

^%%VARIABLE^%%  >> textfile

SO textfile contains
%VARIABLE%

Thanks for your efforts.

Matthew
0
Enroll in September's Course of the Month

This month’s featured course covers 16 hours of training in installation, management, and deployment of VMware vSphere virtualization environments. It's free for Premium Members, Team Accounts, and Qualified Experts!

 
LVL 14

Expert Comment

by:yehudaha
ID: 24431467
no problem
0
 
LVL 85

Accepted Solution

by:
oBdA earned 2000 total points
ID: 24431478
You actually only need double pecent signs:
echo %%variable%% >> log.txt
The caret is required to echo/escape other special characters, like < > | ( ) &
In addition, I'd recommend to put the echo at the beginning, it prevents the lines in the text file ending with a space:
>>"log.txt" echo %%variable%%
0
 
LVL 16

Author Comment

by:Matthew Millers
ID: 24431511
HI,

I tried the %%variable%% and it actually placed the %%variable%% into the output file!

THanks very much for the echo advice, I will use that from now on.

Matthew
0
 
LVL 85

Expert Comment

by:oBdA
ID: 24431783
Did you try that on the command line?
There is a slightly different behavior between echo in the command window and a batch script.
In a script, you normally need two percent signs to echo one.
0
 
LVL 16

Expert Comment

by:t0t0
ID: 24434542
what's your purpose for doing this?
0
 
LVL 16

Author Comment

by:Matthew Millers
ID: 24434656
Hi,

I was writing a script where I could parse a number of disk GUIDs and call the diskshadow program to snap the volumes off for backup purposes. The diskshadow program does not recognise system variables as it uses its own aliases.

Part of the command sequence is to create a alias using %alias%, hence the question.

I have finished the script now anyway, so all good!

Thanks
Matthew
0
 
LVL 16

Expert Comment

by:t0t0
ID: 24434689
makes sense. you seem to know what you're doing.... glad y ou got there!
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

You may have already been in the need to update a whole folder stucture using a script. Robocopy does it well and even provides a list of non-updated files in a log (if asked to). Generally those files that were locked by a user or a process by the …
How to remove superseded packages in windows w60 or w61 installation media (.wim) or online system to prevent unnecessary space. w60 means Windows Vista or Windows Server 2008. w61 means Windows 7 or Windows Server 2008 R2. There are various …
In this video you will find out how to export Office 365 mailboxes using the built in eDiscovery tool. Bear in mind that although this method might be useful in some cases, using PST files as Office 365 backup is troublesome in a long run (more on t…
In this video, Percona Solution Engineer Dimitri Vanoverbeke discusses why you want to use at least three nodes in a database cluster. To discuss how Percona Consulting can help with your design and architecture needs for your database and infras…

719 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question