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kodybrown/err.bat

Last active July 15, 2016 18:42
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Batch file that tests setting a non-zero (error) and a 0 (success) errorlevel
Raw
err.bat
@echo off
dir "%temp%" >NUL
echo err %errorlevel%
dir "c:\doesnotexist" >NUL 2>&1
echo err %errorlevel%
dir "%temp%" >NUL
echo err %errorlevel%
rem https://groups.google.com/forum/m/#!msg/microsoft.public.win2000.cmdprompt.admin/XHeUq8oe2wk/LIEViGNmkK0J
rem comment by Ritchie on 7/19/2003
:: apparently it only doesn't reset the errorlevel when calling a `set var=..`
dir "c:\doesnotexist" >NUL 2>&1
echo err %errorlevel%
set tmpvar=1
echo err %errorlevel%
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