Here's a good summary of the pitfalls and subtleties. –Nick Westgate Jun 17 '15 at 6:18 | show 1 more comment up vote 6 down vote This really works when you This is rare for scripts intended for interactive use, but, it can be super helpful when writing scripts you support but you don’t have access to the target systems. @ECHO OFF Seems unfair that the microsoft tool gets fancy environment variable expansion, but the only API exposed does plain and ordinary expansion. (*) Really just the "Comments" section, not the entry itself. Use the code above wherever you would have used IF ERRORLEVEL 1 ... weblink
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 Errorlevels are not a standard feature of every command. 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 A very helpful feature is the built-in DOS commands like ECHO, IF, and SET will preserve the existing value of %ERRORLEVEL%. https://blogs.msdn.microsoft.com/oldnewthing/20080926-00/?p=20743
Or is it inevitable once a certain point in development is reached? The exit codes set by resource kit utilities are not always consistent, they can vary between machines with different Service packs/Resource kit updates applied. Why don't my users have separate desktops in Windows 10?
I'll have to go back and fix it because the "greater than or equal to" behavior was expected but won't happen due to my mistake. [It's fine to rely on the Also note that build_fail is defined as: :build_fail echo ********** BUILD FAILURE ********** exit /b 1 share|improve this answer answered Dec 15 '10 at 14:43 Merky 43824 does your We use the errorlevel keyword so it kind of looks like: call myExe.exe if errorlevel 1 ( goto build_fail ) That seems to work for us. Set Errorlevel exitCode Specifies a numeric number.If /B is specified, sets ERRORLEVEL that number.If quitting CMD.EXE, sets the process exit code with that number.
Trout.You have answered all of tale103108's questions.Too bad tale103108 does not provide any feedback.Are you a Guru for batch files? Errorlevel 9009 IF ERRORLEVEL n statements should be read as IF Errorlevel >= number i.e. Remember, this is duct tape programming. Tags Code Comments (15) Tom says: September 26, 2008 at 10:06 am Oops.
This means most of the time we only need to check IF ERRORLEVEL 1 ... if %ERRORLEVEL% == 0 ( echo ErrorLevel is zero echo A second statement ) else if %ERRORLEVEL% == 1 ( echo ErrorLevel is one echo A second statement ) else ( If Not Errorlevel 0 billrich Guest Re: DOS IF %ERRORLEVEL% construct « Reply #4 on: September 02, 2009, 09:29:06 AM » Quote from: Salmon Trout on September 02, 2009, 09:00:08 AMCode: [Select]
IF %ERRORLEVEL% NEQ Echo Errorlevel i didn't try this out, but it should work : if %ERRORLEVEL% GEQ 1 EXIT /B %ERRORLEVEL%. –Viktor Fonic Jul 18 '14 at 11:24 1 At least in Windows, %ERRORLEVEL%
call /? have a peek at these guys A small Kix "one liner" can be used too: EXIT $ErrLev If called by a batch like this: KIX32 ERRORLEVEL.KIX $ErrLev=23 it will return an errorlevel 23 (ERRORLEVEL.KIX would be the In most cases the ERRORLEVEL will be the same as the exit code, but there are a few buggy cases where this fails. up vote 54 down vote favorite 5 Inside a batch file on Windows, I use 7-zip like this: ...\right_path\7z a output_file_name.zip file_to_be_compressed How could I check the exit code of 7z Errorlevel Vs %errorlevel%
goto /? However, I don’t use this technique because programs can return negative numbers as well as positive numbers. SomeCommand.exe || GOTO :EOF Tips and Tricks for Return Codes I recommend sticking to zero for success and return codes that are positive values for DOS batch files. check over here Browse other questions tagged windows-xp batch or ask your own question.
What if that process hasn't exited yet? Batch File Return Code Trying start /wait didn't work. It's a fallback step, in the same way that your neighbor is a fallback delivery location if you aren't home.
By default, the command processor will continue executing when an error is raised. page last uploaded: 2016-09-19, 14:57 current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. You may also want to check for specific error codes. Dos Errorlevel Codes Logged Salmon TroutGeniusThanked: 843 Computer: Specs Experience: Experienced OS: Other Re: DOS IF %ERRORLEVEL% construct « Reply #8 on: September 02, 2009, 10:15:40 AM » Quote from: billrich on September 02,
Binomial coefficients and "missing primes" Texas, USA speed ticket as a European citizen, already left the country Does Harley Quinn ever have children? 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 Some utilities will return negative numbers as an exit code. this content Maybe cmd.exe builtin set could set its exit value to the value passed in instead of setting the environment variable when the variable being set in is named ERRORLEVEL?
set /? Exit 0 Exit /B 5 To force an ERRORLEVEL of 1 to be set without exiting, run a small but invalid command like COLOR 00 There is a key difference between Logged billrich Guest Re: DOS IF %ERRORLEVEL% construct « Reply #5 on: September 02, 2009, 09:34:43 AM » http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/batch.mspx?mfr=trueQuote"Using batch filesWith batch files, which are also called batch programs or scripts, What is the role of conjectures in modern mathematics?
You have to code for halting on error. 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 So to check for 0 you need to think outside the box: IF ERRORLEVEL 1 GOTO errorHandling REM no error here, errolevel == 0 :errorHandling Or if you want to code Use ‘exit /?' for help.
Not the answer you're looking for? I need the correct syntax for that. And, no, I'm not Steve Jansen the British jazz drummer, though that does sound like a sweet career.