Executed from within a batch file, /b sets the %errorlevel% environment variable and exits the batch file, rather than exit cmd.exe and return the value as it process exit code.

Outside a batch file, (ie. on the command line), /b is a non-op.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^4: perl and windows batch by BrowserUk
in thread perl and windows batch by leonidlm

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