What is the Windows/cmd.exe equivalent of Linux/bash's $? -- the program exit/return code?

Question

Possible Duplicate:
How do I get the application exit code from a Windows command line?

In Unix/bash, I can simply say:

$ echo $?

to find out the return/exit code of a program, both from interactive and non-interactive shells.

Now, how can I do the equivalent in Windows/cmd.exe?

Answer 1

Use "errorlevel", like this:

IF ERRORLEVEL 1 GOTO ERROR

The errorlevel command is a little peculiar; it returns true if the return code was equal to or higher than the specified errorlevel. You can also write

IF %ERRORLEVEL% NEQ 0 GOTO ERROR

This page is a good overview of how to use errorlevels in .bat files.

Answer 2

The equivalent is:

echo %ERRORLEVEL%

Answer 3

check for the ERRORLEVEL