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 The best way would be to use exit /b 0 in another batch file and call it from your primary script. syntax instead of using %variable%. –foxidrive Jan 3 '14 at 2:44 add a comment| 4 Answers 4 active oldest votes up vote 5 down vote accepted @ECHO OFF SETLOCAL DEL output.txt The exit code of the last Win32 executable execution is stored in the automatic variable $LASTEXITCODE To read exit codes (other than 0 or 1) launch the PowerShell script and return http://objectdevcorp.com/batch-file/batch-file-if-errorlevel-else.html
set /? armor proficiency feats Head, Shoulders, Knees and Toes, Knees and Toes My boss asks me to stop writing small functions and do everything in the same loop Finding The nth Prime Old Forum Search | Forum Rules Copyright © 2013 Computer Hope All rights reserved. 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 http://stackoverflow.com/questions/20892882/set-errorlevel-in-windows-batch-file
Computer Hope Forum Main pageFree helpTipsDictionaryForumLinksContact Welcome, Guest. Use ‘exit /?' for help. if you use Code: [Select]if errorlevel gtr 0 exit /b  anything over errorleve==1 would exit with exit code 1FB Logged Next time google it. Even better, I can repeatedly call the bitwise OR with the same error code and still interpret which errors were raised. << Part 2 – Variables Part 4 – stdin, stdout,
It's just a variable whose name happens to coincide with a command processor concept. I have written if errorlevel == 3 goto tag3 more times that i would like to. If executed from outside a batch script, it will quit CMD.EXE exitCode specifies a numeric number. Errorlevel 9009 I noticed that if I execute set ERRORLEVEL=0 in a command prompt right before kicking off the batch file (in the same command window/environment), the installer never messes with the errorlevel
Peter says: September 26, 2008 at 11:45 am I've just updated the ExpandEnvironmentStrings MSDN entry (*) to reflect this -- the CMD expansion is really different from what the "real" expansion However, this can be fixed by using the following code to check for non-zero return codes: IF %ERRORLEVEL% NEQ 0 ... variable at all. There are also programs that use an exit code of zero to mean success and anything else to mean failure. In addition to this internal state, you can, if you
if /B is specified, sets ERRORLEVEL that number. Batch File Return Code Or use CHOICE.COM, available in all DOS6.* and up versions, to set an errorlevel: ECHO 5 | CHOICE /C:1234567890 /N and ECHO E | CHOICE /C:ABCDEFGHIJ /N will both result in SRS says: September 28, 2008 at 12:26 pm if /? Any information on the subject would be greatly appreciated!
To close an interactive command prompt, the keyboard shortcut ALT + F4 is an alternative to typing EXIT. navigate here Also, when using %variable% within a loop requires the use of delayed expansion and !variable! Errorlevel Vs %errorlevel% I usually use an :end subroutine that does cleanup and would delete it. If Not Errorlevel 0 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
You can get the "system" to use the dynamic ERRORLEVEL simply by undefining any user defined value using set "errorlevel=" –dbenham Sep 23 '13 at 19:41 Why does Windows this content Hi, I'm Steve. 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. DIR >nul 2>&1 The one side effect of this is a file laying around called ret.cmd. Errorlevel Codes
SET /A ERROR_HELP_SCREEN=1 SET /A ERROR_FILE_NOT_FOUND=2 SET /A ERROR_FILE_READ_ONLY=4 SET /A ERROR_UNKNOWN=8 This gives me the flexibility to bitwise OR multiple error numbers together if I want to record numerous problems Errorlevels EXIT /b has the option to set a specific errorlevel, 0 for sucess, 1 or greater for an error. NEQ 0 (ECHO Attempt Failed) ELSE (ECHO Attempt succeeded!) GOTO :eof :Attempt SETLOCAL CALL somethingThatFails SET retcode=!errorlevel! weblink If quitting CMD.EXE, sets the process exit code with that number. [Brought to my attention by Maor Conforti.
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 Batch Errorlevel Handling Let me try to explain it in a different way:a.bat calls b.bat and when b.bat completes, a.bat continues with steps depending on whether b.bat succeeded or failed.a.bat:Code: [Select]rem some code here
My point for today is that the error level is not the same as the ERRORLEVEL environment variable.
Logged To every complex question there is a simple answer and it is wrong…- H.L. windows command-line batch windows-error-reporting share|improve this question asked Sep 23 '13 at 18:42 user972276 2772513 add a comment| 2 Answers 2 active oldest votes up vote 7 down vote accepted You IF DEFINED var is true if var is CURRENTLY defined. Set Errorlevel To 1 eddie says: September 27, 2008 at 8:14 am you know, Go To Statement Considered Harmful.
In the same way that bash doesn't let you "set ?=…". -Raymond] Denis Dmitriev says: September 26, 2008 at 11:34 am It's still asking for trouble because it introduces action at 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? Errorlevels are not a standard feature of every command. check over here This was presumably because there were programs that expressed different degrees of failure with higher and higher exit codes.
Raymond Chen has a good blog entry on it: ERRORLEVEL is not %ERRORLEVEL%. Browse other questions tagged windows command-line batch windows-error-reporting or ask your own question. ECHO. Syntax EXIT [/B] [exitCode] Key /B When used in a batch script, this option will exit only the script (or subroutine) but not CMD.EXE exitCode Sets the %ERRORLEVEL% to a numeric
Would anyone at Microsoft care to make the official CMD expansion into a useful function? 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 CALL somethingThatPasses : don't care about the errorlevel here CALL :return !retcode! Do Matrix Multiplication!
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