Exit in For loop - Windows Command Processor (CMD.EXE)

Question

I am trying to find way to break / exit from FOR loop, if there are any error occured. Below is content of batch file.

@echo on

set myfile=D:\\sample.txt

F         


        

Answer 1

You don't need to call a label

set USBDRIVE=SETLOCAL 
set exit=ENABLEDELAYEDEXPANSION

FOR %%D IN (C D E F G H I J K L M N O P Q R S T U V W X Y Z) DO (
  DIR %%D:\SOURCES\INSTALL.WIM > nul 2>&1 && call set USBDRIVE=%%D: && call set exit=1
  if defined exit goto :dd3
)
:dd3