How do I run a batch script from within a batch script?

Question

How do I call another batch script from within a batch script?

I want it to execute in an if statement.

Answer 1

Here is example:

You have a.bat:

@echo off
if exist b.bat goto RUNB
goto END
:RUNB
b.bat
:END

and b.bat called conditionally from a.bat:

@echo off 
echo "This is b.bat"