Edit xml config with batch file

Question

I have a line in my config file (.exe.config)

 <appSettings configSource="Configuration\local.config" />

And I need use a batch file to change it to

 <appSettings configSource="Configuration\production.config" />

Any ideas?

Answer 1

This is going to be very brittle and prone to error, but if you still want to do it, go ahead:

1. We need delayed expansion

   setlocal enabledelayedexpansion
   

2. Iterate over the lines in the file

   for /f "delims=" %%L in (foo.exe.config) do (
   

3. Store the line

     set "Line=%%L"
   

4. Do the replacement

     set "Line=!Line:Configuration\local.config=Configuration\production.config!"
   

5. Output the line again

     echo !Line!
   )