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Windows 2000 and later: In Windows 2000 & XP a new /B switch has been added to the EXIT command, enabling the batch file to quit with a return code: EXIT When ending a subroutine, you can use EXIT /b N to set a specific ERRORLEVEL N. I know in Bash I can do this by running echo $? share|improve this answer answered Feb 28 '15 at 19:33 jonretting 35415 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign

in the "past". A user defined errorlevel can mask the dynamic value that we are trying to access. Questions and comments are always welcome, just tweet @JoshuaPoehls. For example the way I check whether a command in a batch file has failed is by using the special "errorlevel" version of the "if" statement:- ExternalProgram.exe if errorlevel 1 exit

A solution to do it in C++ looks like below: #include "stdafx.h" #include "windows.h" #include "stdio.h" #include "tchar.h" #include "stdio.h" #include "shellapi.h" int _tmain( int argc, TCHAR *argv[] ) { CString This can make debugging a problem BAT script more difficult, a CMD batch script is more consistent and will set ERRORLEVEL after every command that you run [source]. The message is not printed because the ERRORLEVEL environment variable has no effect on the error level. DDE XTYP_EXECUTE Command Corruption Extract Method is About More Than Code Reuse ► October (3) ► September (7) ► July (5) ► June (4) ► April (1) ► March (3) ►

How do I help minimize interruptions during group meetings as a student? "Rollbacked" or "rolled back" the edit? Then there's no possibility of confusion, although anything which tries to use that environment variable will not work. EXIT[/B][exitCode] /B Specifies to exit the current batch script instead of CMD.EXE. see more linked questions… Related 646How to pass command line parameters to a batch file?301How can you find and replace text in a file using the Windows command-line environment?350How to get

asked 4 years ago viewed 16812 times active 4 months ago Linked 34 Batch Files - Error Handling 27 Get error code from within a batch file 15 Check if process Wanted the messages in WEVL to be custom, have the correct exit code, details, priorities, message, etc. What sense of "hack" is involved in five hacks for using coffee filters? The exit codes that are set do vary, in general a code of 0 (false) will indicate successful completion.

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 rem setlocal set dofoo=yes set i=0 :STARTLOOP if "%i%"=="17" goto EXITLOOP if "%ERRORLEVEL%"=="%n%" set dofoo=no set /a i = %i% + 1 goto STARTLOOP :EXITLOOP if "%dofoo%"=="yes" foo But as Andrew In fact the earlier form should probably be considered defunct (if only my muscle memory would let go) and the newer form used by default instead:- ExternalProgram.exe if %errorlevel% neq 0 Security Patch SUPEE-8788 - Possible Problems?

This form is also required when you have anti-social processes that return negative exit codes [2]. Not the answer you're looking for? Which day of the week is today? How to detect showListButton/hideListButton being clicked on collapsible PageBlockSection?

If you attempt to execute a non-existent command %ERRORLEVEL% = 9009 Detecting Errors In the CMD shell the exit code is made available via the %ERRORLEVEL% variable or via IF ERRORLEVEL SomeFile.exe IF %ERRORLEVEL% EQU 9009 ( ECHO error - SomeFile.exe not found in your PATH ) It’s hard to know this stuff upfront – I generally just use trial and error The .Net runtime can also chuck out negative exit codes if something really serious goes wrong, e.g. And I still hate it.

current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. So one can argue that there does not exist a fool-proof way to check for errors via errorlevel. The first program/script must conform to the convention of returning 0 on success and non-0 on failure for this to work. Join them; it only takes a minute: Sign up How do I get the application exit code from a Windows command line?

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 Related 197What does %~d0 mean in a Windows batch file?474Windows batch files: .bat vs .cmd?132How do you loop through each line in a text file using a windows batch file?232Hidden features rem this next command sets the error level to zero CMD /C EXIT 0 set ERRORLEVEL=1 if ERRORLEVEL 1 echo Does this print? Copyright © 2013 Joshua Poehls blog comments powered by Disqus Please enable JavaScript to view the comments powered by Disqus.

Trying start /wait didn't work. Win32-based) from a command prompt. But you can't change directories by saying set CD=C:\Windows. Logical fallacy: X is bad, Y is worse, thus X is not bad How to convert a set of sequential integers into a set of unique random numbers?

CMD.exe allows you to set it but then from that point on the variable is mostly meaningless. In DOS for the rest of us, we can use FOR loops to determine the errorlevel: @ECHO OFF REM Reset variables FOR %%A IN (1 10 100) DO SET ERR%%A= REM Remember, this is duct tape programming. How do I help minimize interruptions during group meetings as a student?

New tech, old clothes How to solve the old 'gun on a spaceship' problem? "all empires will suffer the same fate should the lessons from history go unlearnt" Somewhat Generalized Mean How?