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errorlevel in for loop returns exit code of iterating statement

  • 项目

It turns out that errorlevel is returning the exit code of iterating statement in the for loop instead of the one immediately preceding it.

for /r \\computer\share\x86 %%x in (*.xml) do (

IsVarMap.exe /file:"%%x"

    echo %ERRORLEVEL%

)

Echoes 0 always. I expect some iterations to return 2, when xml file isn’t a VarMap.

IsVarMap.exe /file:notavarmap.xml

echo %ERRORLEVEL%

Echoes 2 as expected

Comments

  • Anonymous
    January 01, 2003
    This behavior actually makes the FOR /L construct unusable except in trivial cases.  the setlocal enabledelayedexpansion will only work in some cases as well (a subshell seems to break it) and even the :: comment char seems to break inside a for loop. I was writing a startup script to handle startup service dependencies that a couple foreground apps have and I thought nice we have a real for loop construct in cmd files in XP/2003!  Alas, the following doesn't work: SET PS=powershell -nologo -command SET Sleep=timeout /nobreak /t setlocal enabledelayedexpansion FOR /L %%i (1,1,5) DO (    SET SVC=MSSQLSERVER    %PS% "& {if((get-service %SVC%).Status -eq 'Running') {Exit 1}}" > NUL    IF !ERRORLEVEL! EQU 1 GOTO :NextTest    ECHO.  Sleeping 5 seconds...    %Sleep% 5 2>&1> NUL ) endlocal REM Woopsie, never get here 'cause we loop forever since %%i goes undefined GOTO :ServiceStartupTimeout :NextTest REM Woopsie, we get here one loop late if %SVC% is Running  This is because %%i goes undefined REM after a subshell is used. When %%i is undef, then %ERRORLEVEL% and !ERRORLEVEL! == 1 REM Note this makes the service testing useless because we always escape the loop even if the service isn't REM running. :ServiceStartupTimeout ECHO.Timed out waiting for services to start. GOTO :EOF :EOF The above problems are all fixed when you enclose the testing inside a SET /A construct like this: @ECHO off SET i=0 SET iMax=12 :TestSQL    SET SVC=MSSQLSERVER    %PS% "& {if((get-service %SVC%).Status -eq 'Running') {Exit 1}}" > NUL    IF !ERRORLEVEL! EQU 1 GOTO :NextTest        IF %i% == %iMax% GOTO :TestSQL_End    SET /A i=%i% + 1    ECHO.  Sleeping 5 seconds...    %Sleep% 5 2>&1> NUL    GOTO :TestSQL :TestSQL_End GOTO :ServiceStartupTimeout :NextTest ... Makes one wonder, why not just use powershell for the whole thing eh?  Of course they could just fix sc query so contortions aren't necc. to get a service status!

  • Anonymous
    January 01, 2003
    And its logical consequences.

  • Anonymous
    June 13, 2006
    The comment has been removed

  • Anonymous
    July 17, 2014
    for /r \computersharex86 %%x in (*.xml) do (CALL :ISVARMAP "%%x")
    exit
    :ISVARMAP
    IsVarMap.exe /file:"%~1"
    echo %ERRORLEVEL%
    goto :EOF