Batch file and DEL errorlevel 0 issue

Question

The batch has to remove files and directories from specific locations and output success or stdout/stderr messages to a new .txt file. I have created the most of the script

Answer 1

IF ERRORLEVEL 0 [cmd] will execute every time because IF ERRORLEVEL # checks to see if the value of ERRORLEVEL is greater than or equal to #. Therefore, every error code will cause execution of [cmd].

A great reference for this is: http://www.robvanderwoude.com/errorlevel.php

>IF /?
Performs conditional processing in batch programs.

IF [NOT] ERRORLEVEL number command
IF [NOT] string1==string2 command
IF [NOT] EXIST filename command

  NOT               Specifies that Windows should carry out
                    the command only if the condition is false.

  ERRORLEVEL number Specifies a true condition if the last program run
                    returned an exit code equal to or greater than the number
                    specified.

I would recommend modifying your code to something like the following:

:delete
echo deleting %1
del /f /q c:\Users\newuser\Desktop\%1 
if errorlevel 1 (
    rem This block executes if ERRORLEVEL is a non-zero
    echo failed
) else (
    echo succesful
)

GOTO :EOF

If you need something that processes more than one ERRORLEVEL, you could do something like this:

:delete
echo deleting %1
del /f /q c:\Users\newuser\Desktop\%1 
if errorlevel 3 echo Cannot find path& GOTO :delete_errorcheck_done
if errorlevel 2 echo Cannot find file& GOTO :delete_errorcheck_done
if errorlevel 1 echo Unknown error& GOTO :delete_errorcheck_done
echo succesful
:delete_errorcheck_done

GOTO :EOF

OR

:delete
echo deleting %1
del /f /q c:\Users\newuser\Desktop\%1 
goto :delete_error%ERRORLEVEL% || goto :delete_errorOTHER

:delete_errorOTHER
echo Unknown error: %ERRORLEVEL%
GOTO :delete_errorcheck_done
:delete_error3
echo Cannot find path
GOTO :delete_errorcheck_done
:delete_error2
echo Cannot find file
GOTO :delete_errorcheck_done
:delete_error0
echo succesful
:delete_errorcheck_done

GOTO :EOF