Loop through folder tree and execute bat file in subfolders in parallel(accessing the files in the subfolder)

Question

I am trying to have a bat file in folder1 which is the parent folder, and this bat file which named run.bat will loop through all subfolders, and invok

Answer 1

My guess is that the script must be able to consistently change directories from the same place where the for loop was invoked. Just saving the current folder (via a pushd) and restoring it after the child invocation (via popd) should be enough.

@echo off
FOR /d /r %%i IN (*) DO (
   pushd "%%i"
   call "child.bat"
   popd
)

Answer 2

Based upon your extra information in the comments, this should work for you.

@echo off
FOR /d /r %%i IN (*) DO (
   if exist "%%i\child.bat" start "" /d "%%i" "%comspec%" /c "child.bat"
)