What is the equivalent to $? in Windows?

Question

Does anybody know what is the equivalent to $? in Windows command line? Is there any?

EDIT: $? is the UNIX variable which holds the exit code of the last process

Answer 1

You want to check the value of %ERRORLEVEL%.

Answer 2

Windows Batch Files

%ERRORLEVEL% Returns the error code of the most recently used command. A non zero value usually indicates an error.

http://technet.microsoft.com/en-us/library/bb490954.aspx

Windows Powershell

$? Contains True if last operation succeeded and False otherwise. And

$LASTEXITCODE Contains the exit code of the last Win32 executable execution.

http://blogs.msdn.com/powershell/archive/2006/09/15/ErrorLevel-equivalent.aspx

Cygwin Bash Scripting

$? Expands to the exit status code of the most recently executed foreground program.

http://unix.sjcc.edu/cis157/BashParameters.htm

Answer 3

Sorry to dredge up an old thread, but it's worth noting that %ERRORLEVEL% doesn't get reset with every command. You can still test "positive" for errorlevel after several lines of subsequent--and successful--batch code.

You can reliably reset errorlevel to a clean status with ver. This example works with UnxUtils for a more Linux-ish directory listing. The reset might seem extraneous at the end, but not if I need to call this script from another.

:------------------------------------------------------------------------------
:  ll.bat - batch doing its best to emulate UNIX
:  Using UnxUtils when available, it's nearly unix.
:------------------------------------------------------------------------------
:  ll.bat - long list: batch doing its best to emulate UNIX
:  ------------------------------------
:  zedmelon, designer, 2005 | freeware
:------------------------------------------------------------------------------
@echo off
    setlocal
    : use the UnxUtil ls.exe if it is in the path
    ls.exe -laF %1 2>nul

if errorlevel 1 (
    echo.
    echo ----- ls, DOS-style, as no ls.exe was found in the path -----
    echo.
    dir /q %1
    )

: reset errorlevel
    ver>nul 
    endlocal

Feel free to use this. If you haven't seen UnxUtils, check 'em out.