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Solve : XP: how to have one batch file create another with FOR Variables?

Answer»

I WANT to have a batch file create a series of batch files , each of which use a variable.
the final output should read:

for %%V in (*.vnc) do fixit %%V

I tried a batch file
CODE: [Select]for /L %%Q in (0,1,3) do echo for %%V in (*%%Q.vnc) do fixit %%V > %%Q_Fix.batand
Code: [Select]for /L %%Q in (0,1,3) do echo for ^%%V in (*%%Q.vnc) do fixit ^%%V > %%Q_Fix.bat
but they didn't work, as the resulting batch files (ie: 3_fix.bat) came out:

for %V in (*3.vnc) do fixit %V

How can I 'protect' the double percentage sign in the echo output to the file?
(Preview did not work in my browser, so sorry if this didn't come out formatted correctly)
Quote from: crp on January 26, 2009, 02:01:00 PM

the final output should read:

for %%V in (*.vnc) do fixit %%V

Then why is the %%Q present here?

for /L %%Q in (0,1,3) do echo for %%V in (*%%Q.vnc) do fixit %%V > %%Q_Fix.bat

Quote
How can I 'protect' the double percentage sign in the echo output to the file?

The escape char for a percent sign is... a percent sign. That is, to echo one percent sign from a batch, you use two in the code.

Code: [Select]@echo off

for /L %%Q in (0,1,3) do echo for %%%%V in (*%%Q.vnc) do fixit %%%%V > %%Q_Fix.bat

for /L %%Q in (0,1,3) do (
echo %%Q_Fix.bat:
echo.
type %%Q_Fix.bat
echo.
)


Code: [Select]0_Fix.bat:

for %%V in (*0.vnc) do fixit %%V

1_Fix.bat:

for %%V in (*1.vnc) do fixit %%V

2_Fix.bat:

for %%V in (*2.vnc) do fixit %%V

3_Fix.bat:

for %%V in (*3.vnc) do fixit %%VQuote from: Dias de verano on January 26, 2009, 03:45:06 PM
Quote from: crp on January 26, 2009, 02:01:00 PM
the final output should read:

for %%V in (*.vnc) do fixit %%V

Then why is the %%Q present here?

for /L %%Q in (0,1,3) do echo for %%V in (*%%Q.vnc) do fixit %%V > %%Q_Fix.bat
I do not UNDERSTAND the question.

Quote
Quote
How can I 'protect' the double percentage sign in the echo output to the file?

The escape char for a percent sign is... a percent sign. That is, to echo one percent sign from a batch, you use two in the code.

yes Code: [Select]for /L %%Q in (0,1,3) do echo for %%%%V in (*%%Q.vnc) do fixit %%%%V > %%Q_Fix.bat worked perfectly, as wanted.

Where is that NUGGET of information about the ESCape character for '%' being '%' ?
I searched quite a few places for 'dos percentage escape'
THANK YOU! Quote from: crp on January 26, 2009, 04:14:40 PM
Quote from: Dias de verano on January 26, 2009, 03:45:06 PM
Quote from: crp on January 26, 2009, 02:01:00 PM
the final output should read:

for %%V in (*.vnc) do fixit %%V

Then why is the %%Q present here?

for /L %%Q in (0,1,3) do echo for %%V in (*%%Q.vnc) do fixit %%V > %%Q_Fix.bat
I do not understand the question.

You stated that the output should be:

for %%V in (*.vnc) do fixit %%V

(There is no number between the asterisk and 'vnc')

Yet in your code you show

echo for %%V in (*%%Q.vnc)

Which means you want to see *0.vnc, *1.vnc, *3.vnc. Which is different.

That's all.

Quote
Where is that nugget of information about the ESCape character for '%' being '%' ?
I searched quite a few places for 'dos percentage escape'
THANK YOU!

Well, perhaps if you tried "percent sign" you would have found something, and we're not in DOS land...

Here for example

http://www.google.com/search?source=ig&hl=en&rlz=&=&q=escape+percent+sign&btnG=Google+Search&meta=lr%3D

the 2nd result leads to

http://www.robvanderwoude.com/escapechars.html


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