However, this can be fixed by using the following code to check for non-zero return codes: IF %ERRORLEVEL% NEQ 0 ... All rights reserved.C:\Windows\system32>CD C:\folder oneC:\folder one>DIR /BERRORLEVEL.batmy program.exemyfile.iniC:\folder one>ERRORLEVEL.batInvalid parameter to SETLOCAL commandWelcome to my batch file.Access is denied./*My Windows is Win7 64bit. Too bad DOS doesn’t support constant values like Unix/Linux shells. Errorlevels EXIT /b has the option to set a specific errorlevel, 0 for sucess, 1 or greater for an error. http://objectdevcorp.com/batch-file/batch-if-errorlevel-exit.html
For example, you can test that an executable program or script is in your PATH by simply calling the program and checking for return code 9009. 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. says: September 26, 2008 at 12:19 pm Well, at least bash literally doesn't allow you to set the $? call /? http://stackoverflow.com/questions/734598/how-do-i-make-a-batch-file-terminate-upon-encountering-an-error
Btw if you want to discover all the goodies in cmd.exe, the following commands give good help: if /? 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 Maybe not goto in particular, but "try, do this on error" as Fowl mentioned. That would be a neat trick. (I would guess the number of programs that would be broken by the change would be quite near zero.) [I would not be surprised if
I did not accidentally set errorlevel manually, so it should be the system variable, not a userdefined one. Would this be considered as plagiarism? How do you combine the elements in Sheldon's T-shirt? Batch Set Errorlevel In Windows NT4 (and 2000?) this won't work, since the SET command itself will set an errorlevel (usually 0)! (As I learned from Charles Long, in XP the SET command no
You can make the errorlevel anything, and make it different depending if the batch file detects that a file is missing, for example.One thing that could be handy is to store Marty says: September 27, 2008 at 11:34 am A god safety net is to reset ERRORLEVEL each time you use it, similar to the SetLAstError() function. Please login or register.Did you miss your activation email? 1 Hour 1 Day 1 Week 1 Month Forever Login with username, password and session length Forum only search News: Home But you really need to know what the program returns on errors.
Do paper books exist in the 5th ed. Exit /b Errorlevel But there are many exceptions to this general rule. Comments are closed. Hot Network Questions What's the fastest way to generate a 1 GB file containing only random numbers?
Browse other questions tagged windows-xp batch or ask your own question. https://www.manageengine.com/products/desktop-central/returning-error-code-on-scripts-how-to.html Rounding a number up to the nearest multiple of a power of 2 Creating arrows based on GPS velocities to show displacement Head, Shoulders, Knees and Toes, Knees and Toes Does Return Error Code From Batch File Moderator: DosItHelp Post new topic Reply to topic Page 1 of 2 [ 18 posts ] Go to page 1 2 Next Print view Previous topic | Next topic Author Batch File Exit Code 1 DOS/Win9x's command.com or Win2k+'s cmd.exe?
Could California Ratify the Paris Agreement? this content What if that process hasn't exited yet? variable at all. if … return-a-number 17 Maurits [MSFT] says: September 26, 2008 at 5:12 pm Actually reading the post, it appears CMD /C EXIT 17 works. Windows Batch Errorlevel
This type of compare ("%errorlevel%=="0") becomes dubious at best.B.bat can use the exit statement to pass a return code (errorlevel) back to a.bat.QuoteQuits the CMD.EXE program (command interpreter) or the current Success! The message is not printed because the ERRORLEVEL environment variable has no effect on the error level. weblink IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL% might be a better option.
Conclusion: Do not evaulate the errorlevel with %errorlevel% but with if errorlevel. If Errorlevel Neq 0 To determine the exact return code the previous command returned, we could use a construction like this: @ECHO OFF IF ERRORLEVEL 1 SET ERRORLEV=1 IF ERRORLEVEL 2 SET ERRORLEV=2 IF ERRORLEVEL share|improve this answer edited Oct 1 '10 at 5:27 answered Oct 1 '10 at 4:58 Dennis Williamson 58.6k11107142 I tried your code.
A very helpful feature is the built-in DOS commands like ECHO, IF, and SET will preserve the existing value of %ERRORLEVEL%. for exactly this purpose, which no sane program would try to use as its own environment variable. [You gave the answer yourself: "Anything which tries to use that environment variable will Thansk for clarifying my mistake! –Arne Mertz Jan 2 '15 at 11:16 add a comment| up vote 0 down vote Although this request is resolved, there is another reason for a Batch File Error Checking Join them; it only takes a minute: Sign up How do I make a batch file terminate upon encountering an error?
Conditional Execution Using the Return Code There’s a super cool shorthand you can use to execute a second command based on the success or failure of a command. 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 wscript.quit
And I still hate it. 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 The only thing that worked is if errorlevel 1 (...) –AlikElzin-kilaka Apr 13 '15 at 12:59 3 Be aware, errorlevel is not an environment variable. Since that makes a world of difference, could you please clarify that in an edit of your question? –Mihai Limbășan Apr 9 '09 at 14:58 add a comment| 6 Answers 6
if /B is specified, sets ERRORLEVEL that number. How fast is Time running in Majora's Mask?