IF ERRORLEVEL construction has one strange feature, that can be used to our advantage: it returns TRUE if the return code was equal to or higher than the specified errorlevel. To know about Environment variable see the below note. up vote 5 down vote favorite I've got a batch file that does several things. This return code tells me that both errors were raised. his comment is here
Jumping to EOF in this way will exit your current script with the return code of 1. Where are my downvotes? share|improve this answer edited Oct 27 '14 at 14:34 answered Apr 9 '09 at 15:30 Mike Bethany add a comment| up vote 0 down vote We cannot always depend on ERRORLEVEL, Menu Home News FAQ Search Scripting Languages Batch Files Getting Started Batch Techniques Batch HowTos Commands Command Line Switches Shutdown Commands Short Command Line Tips Admin One-Liners Examples Samples Collections Tools
exit /b %errorlevel% See also question about exiting batch file subroutine. I've also updated my code per CodeMonkey, although I've never encountered a negative errorlevel in any of my batch-hacking on XP or Vista. Note: Environment variables are a set of dynamic named values that can affect the way, running processes will behave on a computer. For example, create this .cmd file: @echo off echo Starting very complicated batch file...
Does this work when calling another file, or 'subroutine'? Windows NT4 and later: In NT4 use either COLOR00 or VERIFYOTHER2>NUL to set an errorlevel 1. Most malformed shell commands will be treated as programs to execute (and, hopefully, whatever program gets executed doesn't do something bad). Batch Exit /b In that case we can use generic checks for failures like this: IF EXIST %outfile% (DEL /F %outfile%) CALL some_script.bat -o %outfile% IF NOT EXIST %outfile% (ECHO ERROR & EXIT /b)
But since the DOS command to determine the return code is IF ERRORLEVEL, most people use the name errorlevel. share|improve this answer answered Mar 6 '13 at 11:06 Gaurav Kolarkar_InfoCepts 64137 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google aside from this, you could also check if the file exists with if exist foo.txt echo yada yada to execute multple commands if the condition is true: if ERRORLEVEL 1 ( website here Remember, this is duct tape programming.
neq 0 exit /b !errorlevel! ) Edit: You have to check the error after each command. Batch File Continue On Error EXIT without an ExitCode acts the same as goto:eof and will not alter the %ERRORLEVEL% You should never attempt to directly write to the %ERRORLEVEL% variable, (SET errorlevel...) instead use the I also recommend documenting your possible return codes with easy to read SET statements at the top of your script file, like this: SET /A ERROR_HELP_SCREEN=1 SET /A ERROR_FILE_NOT_FOUND=2 Note that Rounding a number up to the nearest multiple of a power of 2 Could California Ratify the Paris Agreement?
Most programmers agree that an errorlevel 0 means the command executed successfully, and an errorlevel 1 or higher usually spells trouble. IF %ERRORLEVEL% NEQ 0 This is because on XP you can get negative numbers as errors. 0 = no problems, anything else is a problem. How might a government pass a law without the population knowing? http://objectdevcorp.com/batch-file/batch-if-errorlevel-exit.html and this will return TRUE for every non-zero return code.
If one of them fails, I want to exit the whole program. Batch Set Errorlevel If quitting CMD.EXE, set the process exit code no. Did the Chinese population really resort to cannibalism during the reign of Mao?
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echo. Authoritative source that <> and != are identical in performance Word to describe object that can be physically passed through Head, Shoulders, Knees and Toes, Knees and Toes Why are static share|improve this answer answered Dec 4 '13 at 12:46 Rahul Kumar 312 add a comment| up vote 0 down vote The correct syntax for stopping execution if error is: if ERRORLEVEL Creating arrows based on GPS velocities to show displacement I was allowed to enter the airport terminal by showing a boarding pass for a future flight.
Errorlevels are not a standard feature of every command. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the My question is does this work for all non-zero exit codes? Why is engine displacement frequently a few CCs below an exact number?
You'll need something more like: setlocal enabledelayedexpansion for %%f in (C:\Windows\*) do ( same-executable-over-and-over.exe /with different "parameters" if !errorlevel! And keep in mind the way that DOS handles the "IF ERRORLEVEL" tests. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed same-executable-over-and-over.exe /with different "parameters" if %errorlevel% neq 0 exit /b %errorlevel% If you want the value of the errorlevel to propagate outside of your batch file if %errorlevel% neq 0 exit
some_program.exe 2>&1 | FIND "error message here" && (ECHO ERROR & EXIT /b) some_program.exe 2>&1 | FIND "Done processing." || (ECHO ERROR & EXIT /b) share|improve this answer edited Nov 26 Miscellaneous Tweaks Link Speed Test Web Stuff Conversions My Photo Galleries About This Site Disclaimer News FAQ Search What's New Objective Site Policy Your Preferences Credits The Making Of... EXIT[/B][exitCode] /B Specifies to exit the current batch script instead of CMD.EXE. This means most of the time we only need to check IF ERRORLEVEL 1 ...
exit /b %errorlevel% See also question about exiting batch file subroutine.